Abstract: AlPO(4)-31 molecular sieve was synthesized by microwave irradiation using aluminum isopropoxide, orthophosphoric acid, and di-n-butylamine as sources of aluminum, phosphorus, and template, respectively. The crystallization conditions of AlPO(4)-31 were optimized. SAPO-31 molecular sieve samples with different silicon contents were synthesized at the optimal conditions. The structure and acidity of the samples were characterized by X-ray diffraction, N(2) physical adsorption, scanning electron microscopy, (29)Si MAS NMR, NH(3) temperature-programmed desorption, FT-IR of adsorbed pyridine. The catalytic performance of Pd/SAPO-31 bifunctional catalyst for hydroisomerization of n-decane was investigated. The results indicated that the AlPO(4)-31 and SAPO-31 molecular sieves with pure crystal phase and higher crystallinity assigned to ATO topology structure were obtained at 170 degrees C for 2 h by microwave irradiation. The BET surface area and micropore volume were increased because of the introduction of Si to the framework of AlPO(4)-31. The distribution of Si in the framework and the acidity of the SAPO-31 molecular sieve were varied by changing the composition of the reaction mixture. The bifunctional catalyst Pd/SAPO-31 with suitable acidity showed high activity and selectivity for hydroisomerization of n-decane.

Cite: Yang J. , Wu W. , Zhou Y. , Wu G. , Zhao A. , Kikhtyanin O.V. , Toktarev A.V. , Echevsky G.V.
Microwave Irradiation Synthesis of SAPO-31 Molecular Sieve and Its Characterization and Catalytic Performance
Cuihua Xuebao / Chinese Journal of Catalysis. 2011. V.32. N7. P.1234-1241. DOI: 10.3724/SP.J.1088.2011.10138 WOS Scopus РИНЦ ANCAN OpenAlex

Dates:

Submitted:	Feb 19, 2011
Accepted:	Apr 8, 2011
Published print:	Jul 1, 2011

Identifiers:

Web of science:	WOS:000293319300020
Scopus:	2-s2.0-80051610506
Elibrary:	18058709
Chemical Abstracts:	2011:1067447
Chemical Abstracts (print):	156:42775
OpenAlex:	W2334551454

Citing:

DB	Citing
Web of science	3
Scopus	5
Elibrary	5

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