کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
151111 456462 2011 9 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Synthesis of monoglyceride through glycerol esterification with lauric acid over propyl sulfonic acid post-synthesis functionalized SBA-15 mesoporous catalyst
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی مهندسی شیمی (عمومی)
پیش نمایش صفحه اول مقاله
Synthesis of monoglyceride through glycerol esterification with lauric acid over propyl sulfonic acid post-synthesis functionalized SBA-15 mesoporous catalyst
چکیده انگلیسی

Monoglyceride synthesis through glycerol esterification with lauric acid over a propyl sulfonic acid functionalized SBA-15 mesoporous catalyst (HSO3SBA-15) was studied under reduced pressure to continuously remove water formed. Effects of various reaction parameters such as reaction temperature (413–433 K), catalyst loading (1–5%) and glycerol/lauric acid molar ratio (2:1 and 4:1) on lauric acid conversion and products selectivity were successfully elucidated and correlated with reaction scheme and kinetic model. The parent and functionalized SBA-15 were characterized using FT-IR, ammonia chemisorptions, surface analysis, TEM and SEM. Reusability behavior of the catalyst was also demonstrated. Glycerol esterification could be modeled as irreversible parallel reactions and the kinetic data were successfully fitted to a second order kinetic model. The apparent activation energy for monoglyceride formation using a catalyst loading of 5% and glycerol/lauric acid molar ratio of 4:1 was found to be 42 kJ/mol. The HSO3SBA-15 catalyst could be reused up to four times without significant loss of catalytic activity.

Figure optionsDownload as PowerPoint slideHighlights
► Monoglyceride synthesis through glycerol esterification.
► Post-synthesis propyl sulfonic acid functionalization of SBA-15.
► Effects of temperature, catalyst loading and reactants's molar ratio.
► Demonstration of reusability behavior of the catalyst.
► Irreversible parallel reactions with a second order kinetic model.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Chemical Engineering Journal - Volume 174, Issues 2–3, 1 November 2011, Pages 668–676
نویسندگان
, , ,