کد مقاله کد نشریه سال انتشار مقاله انگلیسی ترجمه فارسی نسخه تمام متن
50114 46780 2016 4 صفحه PDF ندارد دانلود کنید
عنوان انگلیسی مقاله
Esterification of octanoic acid using SiO2 doped sulfated aluminum-based solid acid as catalyst
ترجمه فارسی عنوان
استاتیک اسید اکتانیک با استفاده از اسید جامد بر پایه آلومینیوم سولفاتیک به عنوان کاتالیزور با استفاده از SiO2
کلمات کلیدی
اسید اکتانوئیک؛ اصلاح اسید جامد بر اساس آلومینیوم سولفات؛ پروموتر SiO2
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی کاتالیزور
چکیده انگلیسی


• We reported a new solid acid of SO42 −/Al2O3-SiO2.
• SiO2 as additive improved the acid conversion and methyl octanoate yield.
• The optimal acid conversion and methyl octanoate yield were 99.11% and 99.07%.
• SAS-5 could be recycled for nine times with considerable esterification activity.

In this paper, SO42 −/Al2O3-SiO2 (SAS) was prepared and used for the esterification of octanoic acid with methanol. The effect of introduction of SiO2 was characterized by nitrogen sorption, ICP-AES, XRD, NH3-TPD, TG, FTIR and FTIR-pyridine adsorption. The results demonstrated that the doping of SiO2 resulted in the increase of BET surface areas and amount of surface sulfur species which led to an increase of acid sites especially Brönsted acid sites, which consequently boosted the catalytic esterification activity. In addition, the introduction of SiO2 can also increase the thermal stability of SO42 − and its interaction with Al2O3 support which resulted in the alleviation of catalyst deactivation.

Graphical abstractFigure optionsDownload full-size imageDownload as PowerPoint slide

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Catalysis Communications - Volume 82, 5 July 2016, Pages 32–35
نویسندگان
, , , , , ,