کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
9617722 | 49186 | 2005 | 11 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Magnesioaluminophosphate molecular sieves with ATS topology: Synthesis by dry-gel conversion method and catalytic properties in the isopropylation of biphenyl
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موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
کاتالیزور
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Magnesioaluminophosphate molecular sieves with ATS topology: Synthesis by dry-gel conversion method and catalytic properties in the isopropylation of biphenyl Magnesioaluminophosphate molecular sieves with ATS topology: Synthesis by dry-gel conversion method and catalytic properties in the isopropylation of biphenyl](/preview/png/9617722.png)
چکیده انگلیسی
The selectivity for 4,4â²-diisopropylbiphenyl (4,4â²-DIPB) was about 30-35% among DIPB isomers in the isopropylation of biphenyl (BP) over MgAPO-36: this value is lower than MOR and other zeolites with straight channels. Because the selectivity of 4,4â²-DIPB is higher than the composition in equilibrium, the catalysis is controlled by the pores of MgAPO-36. The relative low selectivity for MgAPO-36 is not due to their pore entrance, but to differences in their pore structure. ATS channel with annular side pocket is too loose for selective formation of the transition state to 4,4â²-DIPB, and the formation of bulkier transition states for the other isomers, such as 3,3â²- and 3,4â²-DIPB, are also allowed inside the channel.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Microporous and Mesoporous Materials - Volume 81, Issues 1â3, 6 June 2005, Pages 277-287
Journal: Microporous and Mesoporous Materials - Volume 81, Issues 1â3, 6 June 2005, Pages 277-287
نویسندگان
Shyamal Kumar Saha, Suresh B. Waghmode, Hiroyoshi Maekawa, Reiichiro Kawase, Kenichi Komura, Yoshihiro Kubota, Yoshihiro Sugi,