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现代化工  2022, Vol. 42 Issue (S2): 76-82    DOI: 10.16606/j.cnki.issn0253-4320.2022.S2.018
  科研与开发 本期目录 | 过刊浏览 | 高级检索 |
蜂窝状氮化硼成型工艺及其催化丙烷氧化脱氢性能初探
岳雨蒙, 盛健, 王思佳, 王东琪, 陆安慧
大连理工大学化工学院, 精细化工国家重点实验室, 辽宁省低碳资源高值化利用重点实验室, 辽宁 大连 116024
Molding process for honeycomb boron nitride and its catalytic activity for oxidative dehydrogenation of propane
YUE Yu-meng, SHENG Jian, WANG Si-jia, WANG Dong-qi, LU An-hui
Liaoning Provincial Key Laboratory for Catalytic Conversion of Carbon Resources, State Key Laboratory of Fine Chemicals, School of Chemical Engineering, Dalian University of Technology, Dalian 116024, China
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摘要 采用挤出成型法制备蜂窝状氮化硼催化剂,考察了水粉比、溶胶种类、溶胶含量及羟丙基甲基纤维素含量等因素对成型效果的影响。筛选出合适的水粉比为0.85∶1,粘结剂为硅溶胶(所含SiO2质量占氮化硼粉体的10%)和5%羟丙基甲基纤维素。对制备的蜂窝状氮化硼进行表征表明,片状氮化硼在剪切应力的作用下沿挤出方向定向排列,片体表面分布有球形的SiO2颗粒,二者之间形成B—O—Si键。分析了蜂窝状氮化硼成型过程中发生变形和开裂的原因并提出优化方向。初步应用于丙烷氧化脱氢反应结果表明,蜂窝状氮化硼催化剂在高空速条件下表现出比粉末氮化硼更优异的性能。
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岳雨蒙
盛健
王思佳
王东琪
陆安慧
关键词:  氮化硼  蜂窝状  催化剂成型  丙烷氧化脱氢    
Abstract: A honeycomb boron nitride catalyst is prepared via extrusion molding method.The impacts of water-powder ratio,sol type,sol content and hydroxypropyl methylcellulose content on molding effect are investigated.It is found that the suitable ratio of water to powder is 0.85∶1,and silica sol (mass ratio of SiO2 to boron nitride powder is 10%) and 5% hydroxypropyl methylcellulose are used as the binder.The characterization shows that boron nitride plates are directionally arranged along the extrusion direction under the action of shear stress,and spherical SiO2 particles are distributed on the surface of the plates with B-O-Si bonds formed between them.The causes of deformation and cracking in the molding process of honeycomb boron nitride are analyzed,and the feasible optimization direction is put forward.It is shown through application in the oxidative dehydrogenation of propane that honeycomb boron nitride catalyst presents better performance than powder boron nitride at a high space velocity.
Key words:  boron nitride    honeycomb    catalyst molding    oxidative dehydrogenation of propane
收稿日期:  2022-04-11      修回日期:  2022-07-02          
ZTFLH:  TQ426  
基金资助: 国家自然科学基金重点项目(21733002);国家重点研发计划项目(2018YFA0209404)
通讯作者:  陆安慧(1972-),男,博士,教授,研究方向为低碳分子的催化转化、非金属硼基催化剂的应用基础等,通讯联系人,anhuilu@dlut.edu.cn    E-mail:  anhuilu@dlut.edu.cn
作者简介:  岳雨蒙(1997-),女,硕士生,研究方向为氮化硼成型工艺及其催化应用,357949379@qq.com
引用本文:    
岳雨蒙, 盛健, 王思佳, 王东琪, 陆安慧. 蜂窝状氮化硼成型工艺及其催化丙烷氧化脱氢性能初探[J]. 现代化工, 2022, 42(S2): 76-82.
YUE Yu-meng, SHENG Jian, WANG Si-jia, WANG Dong-qi, LU An-hui. Molding process for honeycomb boron nitride and its catalytic activity for oxidative dehydrogenation of propane. Modern Chemical Industry, 2022, 42(S2): 76-82.
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https://www.xdhg.com.cn/CN/10.16606/j.cnki.issn0253-4320.2022.S2.018  或          https://www.xdhg.com.cn/CN/Y2022/V42/IS2/76
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