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Title: Modified silica-based heterogeneous catalysts for etherification of glycerol

The advent of mesoporous silicas such as MCM-41 has provided new opportunities for research into supported metal catalysis. The loading of metals into framework structures and particularly into the pores of porous molecular sieves, has long been of interest because of their potential catalytic activity. Stable heterogeneous mesoporous basic catalysts were synthesized by wet impregnation of MCM-41 with calcium nitrate and lanthanum nitrate. The surface and structural properties of the prepared catalysts were characterized using BET surface analysis, SEM and TEM. MCM-41 and modified MCM-41 were used in the solventless etherification of glycerol to produce diglycerol as the desired product. The reaction was performed at 250 °C for 8 h, and catalyst activity was evaluated. Catalytic etherification over the 20%Ca{sub 1.6}La{sub 0.6}/MCM-41 catalyst resulted in the highest glycerol conversion of 91% and diglycerol yield of 43%.
Authors:
 [1] ; ;  [2] ;  [3]
  1. Centralized Analytical Laboratory, Universiti Teknologi PETRONAS, Bandar Seri Iskandar, 31750 Tronoh, Perak (Malaysia)
  2. School of Chemical Engineering, Universiti Sains Malaysia, Engineering Campus,14300 Nibong Tebal, Penang (Malaysia)
  3. School of Industrial Technology, Universiti Sains Malaysia, 11800 Penang (Malaysia)
Publication Date:
OSTI Identifier:
22488621
Resource Type:
Journal Article
Resource Relation:
Journal Name: AIP Conference Proceedings; Journal Volume: 1669; Journal Issue: 1; Conference: SCMSM 2014: 23. scientific conference of Microscopy Society Malaysia, Tronoh (Malaysia), 10-12 Dec 2014; Other Information: (c) 2015 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; CALCIUM ALLOYS; CALCIUM NITRATES; CATALYSIS; CATALYSTS; GLYCEROL; IMPREGNATION; LANTHANUM ALLOYS; LANTHANUM NITRATES; LOADING; MOLECULAR SIEVES; NANOSTRUCTURES; POROUS MATERIALS; SCANNING ELECTRON MICROSCOPY; SILICA; SURFACES; TRANSMISSION ELECTRON MICROSCOPY