Journal
RSC ADVANCES
Volume 7, Issue 38, Pages 23647-23656Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c7ra02311a
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Funding
- National Natural Science Foundation of China [21476057]
- Natural Science Foundation of Hebei Province of China [B2016202393, B2015202284]
- Program for the Top Young Innovative Talents of Hebei Province of China
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A composite co-crystalline zeolite HZSM-5/11(78) was synthesized and tested in the conversion of glycerol with ammonia to pyridine bases (pyridine, 2-methylpyridine, 3-methylpyridine). The HZSM-5/11(78) showed good performance compared to other zeolites with similar Si/Al ratios such as HZSM-5(80), HZSM-11(80) and the physical mixture of HZSM-5(80) and HZSM-11(80). Characterization results from the N2 adsorption-desorption and IR of the adsorbed pyridine indicated that the good performance of HZSM5/ 11(78) was related to the higher surface area and co-existence of an appropriate ratio of Lewis and Bronsted sites, which are derived from the intergrowth between zeolites HZSM-5 and HZSM-11. The parameters affecting the catalytic performance of HZSM-5/11(78) were investigated systematically. The optimal conditions for producing pyridine bases from glycerol with ammonia over this catalyst were determined, including a reaction temperature of 520 degrees C, 0.1 MPa pressure with a molar ratio of ammonia to glycerol of 12 : 1, and a GHSV of 300 h(-1)
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