2008-08ÆÚEIÊÕ¼Çé¿ö
(1)Discussion on developing opportunity and potential market risks of domestic methanol production in China
Xue, Zu-Yuan (Tianchen Chemical Engineering Corp.) Source: Xiandai Huagong/Modern Chemical Industry, v 28, n 8, August, 2008, p 1-9 Language: Chinese 
ISSN: 0253-4320 CODEN: HTKUDJ 
Publisher: China National Chemical Information Center 
Abstract: The consumption and technological advances of methanol production in China and abroad are introduced, the risks on the markets are analyzed. It's pointed out that: (1) the methanol production enterprises must increase their sense of crises; (2) the production technological level of methanol and its downstream products must be improved by encouraging self-innovation; (3) the production chains of methanol production enterprises can be extended by the way of integration of upstream and downstream production; (4) methanol should be popularized as a kind of fuel instead of petroleum; (5) the macro-adjustment should be strengthened to prevent blind constructions; (6) the middle- and long-term planning for China's coal chemical industry must be revised and perfected to promote the industry of methanol and its downstream products to a healthy and orderly road. (15 refs.)



(2)Discussion about enhancing exposure prediction and assessment to satisfy chemical risk management and decision-making in China
Nie, Jing-Lei (China Registration Center, SEPA) Source: Xiandai Huagong/Modern Chemical Industry, v 28, n 8, August, 2008, p 10-14 Language: Chinese 
ISSN: 0253-4320 CODEN: HTKUDJ 
Publisher: China National Chemical Information Center 
Abstract: Chemical exposure assessment is an important technical method which is used to control and reduce the toxic chemical usage risk. The traditional method to know the exposure is environmental monitoring. With the computer technology developing, using models to know and predict the chemical environmental exposure is very popular in science and research field, and these new methods also appear in government management and in decision-making to reduce the chemical hazard and environment risk. The exposure and its prediction and assessment technology used in governments of the developed countries are introduced in this paper. The feasibility and proposes are given such as the standard of the exposure research in chemical management proposed, exposure prediction models to assess the exposure of chemicals used, and the chemical risk management in practice implemented. (9 refs.)



(3)Recent progress in fixation of carbon dioxide by microalgae
Yang, Zhong-Hua (College of Chemical Engineering and Technology, Wuhan University of Science and Technology); Chen, Ming-Ming; Zeng, Rong; Li, Xuan-Ke; Liu, Guo-Fei Source: Xiandai Huagong/Modern Chemical Industry, v 28, n 8, August, 2008, p 15-19 Language: Chinese 
ISSN: 0253-4320 CODEN: HTKUDJ 
Publisher: China National Chemical Information Center 
Abstract: With the Kyoto Protocol entering into force, the emission reduction levels of greenhouse gas, especially carbon dioxide, has attracted more and more important attention from governments and enterprises globally. It becomes a hot topic in environmental research fields. The recent progress in carbon dioxide fixation by microalgae is reviewed in this paper. The following research fields, such as screening and breeding of microalgae with high capability of carbon dioxide fixation, the mechanism of carbon dioxide fixation by microalgae, the process development of carbon dioxide fixation by microalgae, and the comprehensive utilization of microalgae after carbon dioxide fixation done, are discussed respectively. (42 refs.)



(4)Advances in detection technology for PFOS and its related persistent contamination
Chen, Hong-Mei (Subcommittee 1 on Textile Auxiliaries, Technical Committee 134 on Dyestuff of Standardization Administration of China); Zhao, Mei Source: Xiandai Huagong/Modern Chemical Industry, v 28, n 8, August, 2008, p 20-24 Language: Chinese 
ISSN: 0253-4320 CODEN: HTKUDJ 
Publisher: China National Chemical Information Center 
Abstract: Perfluorooctane sulfonate (PFOS) and its related perfluorine compounds that possess the persistent organic pollutants having highly bioaccumulation and a variety of toxicity are the most difficult to be degraded so far. The contamination caused by them has gradually been a global environmental problem. Scientists in many countries have put much more efforts on the research of PFOS and the related compounds and further many bans are promulgated by the European Union and other international organizations. It is of great importance to develop an effective method for trace level analysis. The sample pre-treatment methods and detection technology are discussed, and the recent advances and present problems in the study of PFOS are reviewed, with the developing trend in research of PFOS and the related compounds explored. (31 refs.)



(5)Progress in preparation of TiO2 potocatalysts with sol-gel auto igniting synthesis
Shi, Zai-Feng (Department of Chemistry, Hainan Normal University); Sun, Zhen-Fan Source: Xiandai Huagong/Modern Chemical Industry, v 28, n 8, August, 2008, p 25-28 Language: Chinese 
ISSN: 0253-4320 CODEN: HTKUDJ 
Publisher: China National Chemical Information Center 
Abstract: In this article, the kinetics, influencing factors in the process of Sol-gel Auto igniting Synthesis (SAS) which is an advanced technology for preparing nanometer particles of inorganic material are reviewed. The current studies help further understand the preparing of nanometer TiO2 photocatalyst with SAS. It is concluded that SAS will play an important role in practical preparing of high-pure nanometer TiO2 powder, and give a technical support for the production of titania from titanic iron ore. (38 refs.)
Database: Compendex 



(6)Present production and prospect of flavor 2, 3-butanedione
Lian, Min (College of Life Science and Pharmacy, Nanjing University of Technology); Ji, Xiao-Jun; Huang, He; Ren, Xiao; Hu, Nan; Li, Shuang Source: Xiandai Huagong/Modern Chemical Industry, v 28, n 8, August, 2008, p 29-32+34 Language: Chinese 
ISSN: 0253-4320 CODEN: HTKUDJ 
Publisher: China National Chemical Information Center 
Abstract: The production of flavor 2, 3-butanedione both at home and abroad is introduced, and the microbial fermentation is especially introduced, including the microbial strains, fermentation process and product determination. Also, some research focus is raised to enhance its production. Some research emphasis is pointed out for the fermentative production process so as to reduce the environmental pollution and increase the flavor safety. (34 refs.)




(7)Advances in synthesis of oriented zeolite membrane
Jiang, Jin-Long (Department of Chemical Engineering, Huaiyin College of Technology); Feng, Liang-Dong; Yao, Jian-Feng; Zhang, Li-Xiong Source: Xiandai Huagong/Modern Chemical Industry, v 28, n 8, August, 2008, p 33-37+39 Language: Chinese 
ISSN: 0253-4320 CODEN: HTKUDJ 
Publisher: China National Chemical Information Center 
Abstract: Syntheses of oriented zeolite membranes are reviewed in this paper. The syntheses for oriented zeolite membranes, including the direct growth method and the post-synthetic crystal attachment method, the synthetic conditions and the mechanism of orientated growth of zeolite crystals on the substrates are described in detail. A number of important points to be further investigated are also presented. (41 refs.)


(8)Biosynthesis of natural 2-phenylethanol by yeast cells
Wang, Cheng-Tao (College of Chemical and Environmental Engineering, Beijing Technology and Business University); Sun, Bao-Guo; Cao, Yan-Ping; Wang, Jing; Zhang, Hui Source: Xiandai Huagong/Modern Chemical Industry, v 28, n 8, August, 2008, p 38-41+43 Language: Chinese 
ISSN: 0253-4320 CODEN: HTKUDJ 
Publisher: China National Chemical Information Center 
Abstract: 2-Phenylethanol (2-PE), a natural aroma compound, is prepared by yeast cells presented in this paper. A strain of Saccharomyces cerevisiae HJ, having a high production of 2-PE from L-Phe, is screened out from 45 industrial yeast strains of the lab collection. Through the orthogonal test, the optimum composition of medium is obtained and the RP-HPLC method is established for the separation and determination of L-Phe and 2-PE. The fermentation combined with insitu product removal is applied to the production of 2-PE, and 2.21 g/L of 2-PE can be produced with a conversion rate of 55.5%, which can partly overcome the toxicity of high 2-PE to yeast cells. (11 refs.)



(9)Preparation of modified polyethylenemine with waterborne epoxy resin and its effects on paper strength
Li, Xiao-Rui (College of Chemistry and Chemical Engineering, Shaanxi University of Science and Technology); Wei, Jun-Feng; Li, Gang-Hui Source: Xiandai Huagong/Modern Chemical Industry, v 28, n 8, August, 2008, p 42-45 Language: Chinese 
ISSN: 0253-4320 CODEN: HTKUDJ 
Publisher: China National Chemical Information Center 
Abstract: The cationic strength agents for paper-making are prepared through modification of polyethylene mine (PEI) with bisphenol A epoxy resin (BAE) emulsion and water-soluble glycerine epoxy resin (GE) respectively. The influence of composition, additive amount and retention aid of cationic polyamide on paper strength is studied. The microstructure of paper sheet is characterized by SEM. The results show that both waterborne epoxy resins can increase the bonding strength between PEI and paper fibers, and enhance the wet strength from 14.46% to 21.65% and 22.84%, respectively. At the same time, the modified PEI with BAE emulsion can improve the ring crush index to 40.54%, and the modified PEI with GE can make folding endurance increased by over 10%. (8 refs.)




(10)New way to prepare electrolyzed oxidizing water
Zhu, Yu-Chan (Department of Chemical and Environmental Engineering, Wuhan Polytechnic University); Ren, Zhan-Dong; Zhang, Qi Source: Xiandai Huagong/Modern Chemical Industry, v 28, n 8, August, 2008, p 46-48+50 Language: Chinese 
ISSN: 0253-4320 CODEN: HTKUDJ 
Publisher: China National Chemical Information Center 
Abstract: The effects of ion membrane types, the electrolyticways and electrolyzed reductive water's (ERW) reflux on the preparation technology of electrolyzed oxidizing water (EOW) are investigated. The results show that: (1) the electrolyticefficiency can be enhanced using anion exchange membrane instead of cation exchange membrane because the former one can effectively prevent hydrogen ion from permeating into cation cell; (3) the best way of electrolytic is that both cells are electrolytic solution and anion exchange membrane is used; (3) the eligible EOW can be obtained under the reflux ratio of 40%-60%, and the value of pH will be out of range when the reflux ratio is above 80%. The effects of different reflux ratio on the value of oxidation reductive potential (ORP) and available chlorine content (ACC) are very little. A new preparing process is designed, which can not only enhance electrolytic efficiency and electrode lifetime, but also can decrease ERW discharge. (13 refs.)



(11)Preparation of a novel biodegradable polyester elastomer and its properties
Liu, Quan-Yong (Beijing Key Laboratory of Preparation and Processing of Novel Polymer Materials, Beijing University of Chemical Technology); Tan, Tian-Wei; Weng, Jing-Yi; Tian, Wei; Zhang, Li-Qun Source: Xiandai Huagong/Modern Chemical Industry, v 28, n 8, August, 2008, p 49-52+54 Language: Chinese 
ISSN: 0253-4320 CODEN: HTKUDJ 
Publisher: China National Chemical Information Center 
Abstract: A novel biodegradable poly (sebacate-glycerol-citrate) (PGSC) elastomer is prepared, and its structure, composition, performances such as mechanical properties, thermal-properties and biodegradability are characterized. The composition and properties of prepared PGSC elastomer can be adjusted by controlling the thermal-curing time. Hydrogen bonding action exists in the materials, which greatly influences the thermal-properties and biodegradability. It is expected that PGSC elastomers can be used as anti-conglutination films in surgery, guided tissue regeneration membranes and drug delivery matrixes. (16 refs.)



(12)Synthesis of pinonamides
Yin, Yan-Bai (Institute of Chemical Industry of Forest Products, CAF); Song, Zhan-Qian; Wang, Zong-De; Jiang, Hong-Quan Source: Xiandai Huagong/Modern Chemical Industry, v 28, n 8, August, 2008, p 53-55 Language: Chinese 
ISSN: 0253-4320 CODEN: HTKUDJ 
Publisher: China National Chemical Information Center 
Abstract: 2-(3-Acetyl-2, 2-dimethylcyclobutyl)acetic acid (pinonic acid) is synthesized using ¦Á-pinene as raw materials, water as the reaction solvent and potassium permanganate as oxidant. The yield of pinonic acid can be up to 50%. Six kinds of N-aryl pinonamides are prepared through the reaction of aryl amine with 2-(3-acetyl-2, 2-dimethylcyclobutyl) acetyl chloride which is prepared from pinonic acid and thionyl chloride. The yields of the amides are between 40.4%-69.9%. (14 refs.)

	 


(13)Study on synthetic technology of mitiglinide
Zhang, Hong-Mei (College of Chemical Engineering, Tianjin University); Chen, Li-Gong; Cao, Xiao-Hui; Zhou, Xiao-Li; Wang, Wei Source: Xiandai Huagong/Modern Chemical Industry, v 28, n 8, August, 2008, p 56-59 Language: Chinese 
ISSN: 0253-4320 CODEN: HTKUDJ 
Publisher: China National Chemical Information Center 
Abstract: (+)-Monocalcium bis[(2S)-2-benzyl-3-(cis-hexahydroisoindolin-2-ylcarbonyl) -propionate] dehydrate (viz. Mitiglinide) is a novel oral hypoglycemic agent firstly marketed in Japan in year 2004. Its clinical manifestation is excellent. In this paper the synthetic route of MTL is established with dimethyl succinate as a starting material and through Stobble condensation. After conditions optimized the total yield can be 8.0%. The key intermediates and MTL are all characterized by 1H-NMR and 13C-NMR spectra and optical rotation value is measured and identical with the literature. (12 refs.)


	 
(14)Study on organic solvent desorption of soils contaminated with heavy concentration petroleum hydrocarbons
Lian, Jing-Yan (School of Chemistry and Chemical Engineering, Tianjin University of Technology); Du, Yong-Liang; Zhang, Kai-Rui; Liu, Pei; Li, Zhong-Yuan; Li, Xin-Gang Source: Xiandai Huagong/Modern Chemical Industry, v 28, n 8, August, 2008, p 60-61+63 Language: Chinese 
ISSN: 0253-4320 CODEN: HTKUDJ 
Abstract: The research of organic solvent desorption of soils contaminated with heavy concentration of petroleum hydrocarbons is made. Several solvents are used in desorption experiments of the typical petroleum contaminated soils from oilfield. The desorption efficiency of different solvents are studied. Results showed that TU-A, a composite solvent of n-pentane and n-hexane (1:4 of volume ratio), has the best capability among them. The effects of temperature, treating time and solvent volume on the removal rate of oil are studied with this TU-A solvent. Room temperature and 20 min of treatment proves to be more efficient, and the oil removal rate can reach 95% and exceed 98% after twice washing. (10 refs.)
50.	 



(15)Study on preparation and activity of MMT-supported initiator
Ma, Jian-Zhong (College of Resource and Environment, Shaanxi University of Science and Technology); E.T., Tao; Bao, Yan Source: Xiandai Huagong/Modern Chemical Industry, v 28, n 8, August, 2008, p 62-65 Language: Chinese 
ISSN: 0253-4320 CODEN: HTKUDJ 
Publisher: China National Chemical Information Center 
Abstract: Supported initiators (MMT-X-land MMT-X-2) are synthesized by initiators molecules intercalating the galleries of montmorillonnite (MMT). The activity of supported initiators of three kinds of MMT-X-2 are compared, and the process of preparing MMT-KPS-1 is optimized. The results indicate the successful interlation of initiations in the galleries of MMT layer and the larger proportion of MMT in supported initiator, the weaker activity of initiators. On the condition of the proper proportion of MMT in supported initiator, the activity of initiators increases, and the activity decrease of KPS caused by layers of MMT is less. When the dosages of MMT and KPS are the same, the time of intercalation process is 1 h, the loading amount of KPS and activity of MMT-KPS-1 will be the biggest. (5 refs.)



(16)Commercialization of sulfolane extractive distillation process in Qingdao Petrochemical apparatus
Wang, Xin-Jian (Qingdao Petrochemical Company Ltd., SINOPEC) Source: Xiandai Huagong/Modern Chemical Industry, v 28, n 8, August, 2008, p 66-68+70 Language: Chinese 
ISSN: 0253-4320 CODEN: HTKUDJ 
Publisher: China National Chemical Information Center 
Abstract: The sulfolane extractive distillation process is successfully commercialized in benzene extraction unit with a production capacity of 80 kt/a in Qingdao Petrochemical Company Ltd.. The operational results show that the benzene purity and recovery efficiency are 99.99% and 99.8%, respectively. The crystallizing temperature of benzene is 5.5¡ãC. The energy consumption of the unit is 1700.68 MJ/t, the steam consumption is 0.41 t/t. Besides, some problems and solutions during the operation, such as poor solvent acidification, solvent regeneration and quality of benzene, are introduced, and the countermeasures are carried out.



 
(17)Study on purification process of highly pure tungsten hexafluoride
Liu, Tong (The 718th Research Institute, CSIC); Wang, Shao-Bo; Li, Shao-Bo; Wang, Zhan-Wei Source: Xiandai Huagong/Modern Chemical Industry, v 28, n 8, August, 2008, p 69-72 Language: Chinese 
ISSN: 0253-4320 CODEN: HTKUDJ 
Publisher: China National Chemical Information Center 
Abstract: The combination system of adsorption-distillation-bubbling is used for the purification of tungsten hexafluoride. HF can be removed from the tungsten hexafluoride by the adsorption process. Other impurities can be separated by the distillation-bubbling process. The experiment results indicate that the adsorption is an effective way for wiping off HF. The result of experiments also shows that the volume fraction of HF can be reduced to less than 1 ¡Á 10-6 in WF6. Combined with the distillation and bubbling process, the content of gaseous impurities in WF6 can be reduced to less than 1 ¡Á 10-6. Finally, highly pure WF6 of 99.999% through this purification process can be acquired. The distillation-bubbling can be applied to the purification of WF6, which will get nice separation effect and good economic benefits, and it can be applied to industrial production. (14 refs.)
Publisher: China National Chemical Information Center 



	 
(18)Pilot research for producing N, N prime -m-phenylenedimaleimide
Zhu, Guang-Yong (Sichuan University of Science and Engineering); Xie, Feng Source: Xiandai Huagong/Modern Chemical Industry, v 28, n 8, August, 2008, p 73-75 Language: Chinese 
ISSN: 0253-4320 CODEN: HTKUDJ 
Publisher: China National Chemical Information Center 
Abstract: A pilot run for preparation of N, N prime -m-phenylenedimaleimide by the reaction of maleic anhydride and m-phenylene-diamine in acetic acid is made. When the reaction is carried out at 45¡ãC for 30 minutes in the first step and for 3 hours in the second step, the average yield of pilot test is 90%, wherein the mole ratio of maleic anhydride to m-phehylenediamine is 2.1 to 1. The product is characterized by FTIR and mass chromatogram, and its structure is further confirmed. (12 refs.)


(19)Removal of water vapor from 1, 1-difluoroethane by membrane
Yang, Jian (State Key Laboratory of Fine Chemicals, R and D Center of Membrane Science and Technology, Dalian University of Technology); He, Gao-Hong; Wang, Yue; Dou, Hong; Li, Bao-Jun; Liu, Yuan-Fa Source: Xiandai Huagong/Modern Chemical Industry, v 28, n 8, August, 2008, p 76-78+80 Language: Chinese 
ISSN: 0253-4320 CODEN: HTKUDJ 
Publisher: China National Chemical Information Center 
Abstract: The polysulfone hollow fiber membrane modules are used to remove water vapor from 1, 1-difluoroethane (HFC-152a) gas through the experimental process in a refrigerant plant. The dehumidification results of this kind of membrane module are measured in the experiments. The effects of the pressure and velocity of feed on the dehydration properties of the membranes are also investigated. The mass fraction of water in HFC-152a feed gas can be decreased from (700-900) ¡Á 10-6 to (200-300) ¡Á 10-6 by the hollow fiber membranes under very low pressure. The dehumidification process of the existing plant has been optimumly designed, and the excellent economic benefits could be achieved with very low energy consumption. (4 refs.)



(20)Simulation of distillation based on Aspen plus for products from catalytic amination of ethanolamine
Hao, Miao-Li (School of Energy and Power Engineering, Xi'an Jiaotong University); Liu, Gong; Yang, Bo-Lun; Yang, Jian-Ming; Zhang, Wei; Lu, Jian Source: Xiandai Huagong/Modern Chemical Industry, v 28, n 8, August, 2008, p 79-83 Language: Chinese 
ISSN: 0253-4320 CODEN: HTKUDJ 
Publisher: China National Chemical Information Center 
Abstract: Using the simulation software Aspen plus, the distillation process for the products such as ethylenediamine and piperazine from the catalytic amination of ethanolamine is simulated. Based on the consideration of the product properties, the separation route is designed firstly, then using the modules of Flash and DSTWU, to carry out the calculation, the operation parameters such as the reflux ratio, the number of stage and the temperature is obtained. Using the rigorous module of RadFrac, the validity of this process is validated, and the sensitivity analysis is carried out too. NRTL method is adopted in the simulation; the character of Pyrazine is gained through the module of Properties Estimation. The results show that the process is reasonable and it can meet the requirement of products separation, the operational parameters will provide help for the process design and operation. (7 refs.)



(21)Review of Japan's green and sustainable chemistry award in 2008
Li, Jun-Sheng (Department of Biological and Chemical Engineering, Guangxi University of Technology); Cheng, Hai-Tao Source: Xiandai Huagong/Modern Chemical Industry, v 28, n 8, August, 2008, p 84-86 Language: Chinese 
ISSN: 0253-4320 CODEN: HTKUDJ 
Publisher: China National Chemical Information Center 
Abstract: The 7th Green and Sustainable Chemistry Award of Japan are introduced: (1) Awarded by the Minister of Economy, Trade and Industry: The development of an environmental benign THF polymerization process utilizing solid acid catalysis, Setoyama Toru, Kobayashi Mitsuharu, Mitsubishi Chemical Group Science and Technology Research Center, Inc., and Tanaka Minoru, Takeo Hiroshi, Mitsubishi Chemical Corporation, and Yoshida Teruo, Mitsubishi Chemical Engineering Corporation; (2) Awarded by the Minister of Education, Culture, Sports, Science and Technology: Contribution to education and dissemination of Green and Sustainable Chemistry, Ogino Kazuko Professor Emeritus, College of Medical Sciences, Tohoku University; (3) Awarded by the Minister of the Environment: Development of new watch lubricant for decrease of burdens on the environment, Akao Yuji, Citizen Watch Co., Ltd. (4) The Green and Sustainable Chemistry Award: Professor Kondo Teruyuki and Professor Mizuno Noritaka, School of Engineering, University of Tokyo.




(22)Application of ionic liquids in supported liquid membranes
Xue, Guan (College of Science, Northwest Polytechnological University); Hu, Xiao-Ling; Zhao, Ya-Mei; Zheng, Xi Source: Xiandai Huagong/Modern Chemical Industry, v 28, n 8, August, 2008, p 87-90+94 Language: Chinese 
ISSN: 0253-4320 CODEN: HTKUDJ 
Publisher: China National Chemical Information Center 
Abstract: Ionic liquids that are used as liquid phase in supported liquid membranes are introduced. The factors leading to the instability of supported ionic liquid membranes are analyzed. The application of supported ionic liquid membranes in the separation of gas, organic compounds and chemical reactions are also reviewed. The prospects for the commercialization of the supported ionic liquid membranes are presented. (20 refs.)