Journal
CHEMNANOMAT
Volume 5, Issue 9, Pages 1225-1232Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/cnma.201900349
Keywords
bifunctional catalysts; high crystallinity; graphene oxide; hydroisomerization; non-solvent method
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Funding
- Science and Technology Major Projects of Shanxi Province [GJ 2016-01]
- Natural Science Foundation of Shanghai [19ZR1463400]
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In the presence of graphene oxide (GO), highly crystallized SAPO-11 molecular sieves were prepared by a non-solvent method. The functional groups of GO bind with raw materials, with the formation of hydrogen bonds and acid amides, verified by the XPS analysis. The inorganic precursor and structure-directing agent molecules will be fixed on the surface of GO, increasing the reaction rate and crystallization for SAPO-11 preparation, confirmed by the XRD and BET results. Meanwhile, the IR analysis of the adsorption of pyridine indicates there are more acidic sites for the highly crystallized SAPO-11 sample. The resultant well-crystallized SAPO-11 molecular sieves exhibited greater isomer yield and better catalytic activity compared to traditional SAPO-11 prepared without GO.
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