Preparation, modification and deodorization performance of MCM-41 composite corn stalk

A series of MCM-41 and corn stalk (SC) composites (SC-MCM-41) were prepared via hydrothermal method. When measured for a SC-MCM-41 with SC/MCM-41 mass ratio of 1:2, the adsorption time of H 2 S and CH 3 SH can reach 90 min and 80 min, respectively. Whereas, Cu–SC-MCM-41 with copper content of 12.3%...

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Bibliographic Details
Published in:Journal of porous materials 2022-06, Vol.29 (3), p.759-770
Main Authors: Li, Fen, Meng, Fanzhu, Hu, Jinguang, Yu, Cailian, Zhang, Yanping, Ge, Baocai
Format: Article
Language:English
Subjects:
Adsorption
Catalysis
Characterization and Evaluation of Materials
Chemistry
Chemistry and Materials Science
Copper
Corn
Functional groups
Hydrogen sulfide
Physical Chemistry
Solid phases
Surface chemistry
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Summary:A series of MCM-41 and corn stalk (SC) composites (SC-MCM-41) were prepared via hydrothermal method. When measured for a SC-MCM-41 with SC/MCM-41 mass ratio of 1:2, the adsorption time of H 2 S and CH 3 SH can reach 90 min and 80 min, respectively. Whereas, Cu–SC-MCM-41 with copper content of 12.3% exhibited a longer adsorption time, which was 125 min and 90 min for H 2 S and CH 3 SH, respectively. Both SC-MCM-41 and Cu–SC-MCM-41 showed a rough surface with multi-level pore structure dominated by mesopores. Within the composite, the SC and MCM-41 is chemically connected by the C–Si bonds and nitrogen-containing functional groups on the surface. The copper in the Cu–SC-MCM-41 composite mainly exists in the form of CuO and Cu 2 O. Following H 2 S and CH 3 SH adsorption, solid-phase products were deposited on the surface and inside of the Cu–SC-MCM-41 composite, leading to pores blockage with consequent reduction of the adsorption performance.
ISSN:1380-2224
1573-4854
DOI:10.1007/s10934-022-01204-6