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现代化工  2020, Vol. 40 Issue (4): 124-128    DOI: 10.16606/j.cnki.issn0253-4320.2020.04.027
  科研与开发 本期目录 | 过刊浏览 | 高级检索 |
酸处理对H-丝光沸石结构及其催化异构性能的影响
王雪源1,2, 黄德奇2, 岳金方2, 罗志臣2, 王元有2, 张瑞云2, 曾韬1
1. 南京林业大学化学工程学院, 江苏 南京 210037;
2. 扬州工业职业技术学院化学工程学院, 江苏 扬州 225127
Effect of acid treatment on structure of H-mordenite and its catalytic performance in isomerization
WANG Xue-yuan1,2, HUANG De-qi2, YUE Jin-fang2, LUO Zhi-chen2, WANG Yuan-you2, ZHANG Rui-yun2, ZENG Tao1
1. College of Chemical Engineering, Nanjing Forestry University, Nanjing 210037, China;
2. School of Chemical Engineering, Yangzhou Polytechnic Institute, Yangzhou 225127, China
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摘要 采用不同浓度的HCl处理H-丝光沸石,研究酸处理对H-丝光沸石结构及其催化异构性能的影响。通过XRD、N2吸附-脱附表征手段考察HCl处理后H-丝光沸石结晶度、比表面积、孔容的变化;利用Py-IR测定了经酸处理后沸石B/L酸的变化;通过α-蒎烯催化异构实验考察经HCl处理后H-丝光沸石的催化异构性能。结果表明,HCl热处理对H-丝光沸石比表面积有明显的影响,且增大了丝光沸石的微孔和介孔孔容;HCl热处理使H-丝光沸石含有的Br nsted酸和Lewis酸中心数量大幅增加;经HCl处理后H-丝光沸石催化α-蒎烯的转化率下降幅度为12.7%~37.8%,但苧烯选择性大幅提高22.7%~30.2%,莰烯选择性不变。
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王雪源
黄德奇
岳金方
罗志臣
王元有
张瑞云
曾韬
关键词:  酸处理  H-丝光沸石  沸石结构  催化异构    
Abstract: The effects of acid treatment on the structure and catalytic isomerization performance of H-mordenite are studied by treating H-mordenite with different concentrations of HCl.Changes of crystallinity,specific surface area and pore volume of H-mordenite after HCl treatment are revealed by means of XRD and N2 adsorption-desorption characterization.Variations of B/L acid amount in H-mordenite after HCl treatment are determined by Py-IR,and the catalytic performance is investigated through the isomerization of α-pinene.It is shown that HCl heat treatment has a significant effect on the specific surface area of H-mordenite,which can also increase the microporous and mesoporous pore volume of H-mordenit,and result in a significant increase in the number of Br nsted and Lewis acid centers of H-mordenit.The conversion rate of α-pinene over H-mordenite after HCl treatment decreases 12.7%-37.8% than that over untreated one,but the selectivity of limonene increases dramatically by 22.7%-30.2% and that of camphene remains unchanged.
Key words:  acid treatment    H-mordenite    zeolite structure    isomerization
收稿日期:  2019-06-05      修回日期:  2020-02-11          
TQ35  
基金资助: 江苏省高等学校自然科学研究面上项目(17KJB150046)
通讯作者:  曾韬(1952-),男,大学,教授,博士生导师,研究方向为萜类化学与利用、林产精细化学品及香料合成,通讯联系人,zengtao@njfu.edu.cn。    E-mail:  zengtao@njfu.edu.cn
作者简介:  王雪源(1970-),男,博士,教授,主要从事林产精细化学品研究工作,wxy100000@163.com
引用本文:    
王雪源, 黄德奇, 岳金方, 罗志臣, 王元有, 张瑞云, 曾韬. 酸处理对H-丝光沸石结构及其催化异构性能的影响[J]. 现代化工, 2020, 40(4): 124-128.
WANG Xue-yuan, HUANG De-qi, YUE Jin-fang, LUO Zhi-chen, WANG Yuan-you, ZHANG Rui-yun, ZENG Tao. Effect of acid treatment on structure of H-mordenite and its catalytic performance in isomerization. Modern Chemical Industry, 2020, 40(4): 124-128.
链接本文:  
https://www.xdhg.com.cn/CN/10.16606/j.cnki.issn0253-4320.2020.04.027  或          https://www.xdhg.com.cn/CN/Y2020/V40/I4/124
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