کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
9610191 | 47163 | 2005 | 6 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Catalytic synthesis of butylketene and hexylketene from hexanoic acid and octanoic acid on functionalized silica monoliths at short contact times
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
کاتالیزور
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
Butylketene and hexylketene have been synthesized by catalytic dehydration of hexanoic and octanoic acids, respectively, over functionalized silica monoliths. The efficacy of silica for production of low molecular weight ketenes can be extended to higher molecular weight ketenes without any compromise in selectivity. For instance, the catalytic dehydration of octanoic acid was demonstrated to produce hexylketene with carbon selectivities on the order of 90% at temperatures between 745 and 795Â K over a functionalized silica monolith. The results indicate that the control of contact time is a valid strategy for maximizing yield in catalytic ketene synthesis. Also, the ketene synthesis process can be integrated easily with ketene derivatization to prepare esters, in high yields.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Catalysis Today - Volumes 107â108, 30 October 2005, Pages 244-249
Journal: Catalysis Today - Volumes 107â108, 30 October 2005, Pages 244-249
نویسندگان
Adriana J. Becerra, Ramiro Martinez, Marylin C. Huff, Mark A. Barteau,