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Published on: May 11, 2017
Low Temperature NH3-SCR over Mn-Ce Oxides Supported on MCM-41 from Diatomite
Mingxuan Ma1, Xiaoyu Ma1, Suping Cui1
1College of Materials Science and Engineering, Beijing University of Technology, Pingleyuan 100, Chaoyang District, Beijing 100124, China.
Abstract:
A series of MCM-41 molecular sieves with different molar ratio of template to silicon were synthesized through hydrothermal synthesis method by using cetyltrimethylammonium bromide (CTAB) as the template, diatomite as the silicon source. By using impregnation method, the Mn-Ce/MCM-41 SCR molecular sieve-based catalysts were prepared. The results observed that when the molar ratio of template to silicon was 0.2:1, the MCM-41 as catalyst carrier has the highest surface area and largest pore volume, it also presented typically ordered hexagonal arrays of uniform channels. The denitration catalytic material based on this carrier has a high number of Lewis acidic sites, and the denitration efficiency can reach more than 93%.
