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Graphene Oxide Induced High Crystallinity of SAPO‐11 Molecular Sieves for Improved Alkane Isomerization Performance
Author(s) -
Du Yanyan,
Yao Heliang,
Zhao Lei,
Yang Hongmei,
Wang Min,
Yuan Long,
Xu Yanhui,
Li Jiusheng
Publication year - 2019
Publication title -
chemnanomat
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.947
H-Index - 32
ISSN - 2199-692X
DOI - 10.1002/cnma.201900349
Subject(s) - molecular sieve , crystallinity , isomerization , catalysis , crystallization , oxide , alkane , chemistry , adsorption , solvent , mesoporous material , molecule , yield (engineering) , chemical engineering , materials science , organic chemistry , crystallography , engineering , metallurgy
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.