کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
613569 880724 2006 7 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Synthesis, characterization, and catalytic activity of phosphomolybdic acid supported on hydrous zirconia
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی شیمی کلوئیدی و سطحی
پیش نمایش صفحه اول مقاله
Synthesis, characterization, and catalytic activity of phosphomolybdic acid supported on hydrous zirconia
چکیده انگلیسی

A series of ecofriendly solid acid catalyst was synthesized by phosphomolybdic acid impregnated on hydrous zirconia (ZPMA) by an incipient wetness impregnation technique. The support and the resulting catalysts were characterized by X-ray diffraction, FTIR, EPMA, BET surface area, acid sites, etc. These studies indicate that the phosphomolybdic acid keeps its Keggin-type structure unaltered up to 500 °C. Catalytic activities of the material were evaluated for the esterification of acetic acid reaction. The 12 wt% of phosphomolybdic acid supported on hydrous zirconia shows highest surface area, acid sites and gives about 86% conversion with 100% selectivity of n-butyl acetate.

With increase of the reaction time from 60 to 300 min, the percentage of conversion of acetic acid increases from 25 to 65% and 35 to 89% for zirconia and 12 wt% ZPMA, respectively. The selectivity toward butyl acetate nearly 100% in all cases.Figure optionsDownload as PowerPoint slide

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Colloid and Interface Science - Volume 300, Issue 1, 1 August 2006, Pages 237–243
نویسندگان
, , , ,