An effective route to improve the catalytic performance of SAPO-34 in the methanol-to-olefin reaction

• Published in: Journal of natural gas chemistry Vol. 21; no. 4; pp. 431 - 434
• Main Authors: Liu, Guangyu, Tian, Peng, Xia, Qinhua, Liu, Zhongmin
• Format: Journal Article
• Language: English
• Published: Chengdu Elsevier B.V 01.07.2012; Dalian Institute of Chemical Physics; National Engineering Laboratory for Methanol to Olefin,Dalian Institute of Chemical Physics,Chinese Academy of Sciences,Dalian 116023,Liaoning,China; School of Chemistry and Chemical Engineering,Henan University of Technology,Zhengzhou 450001,Henan,China%National Engineering Laboratory for Methanol to Olefin,Dalian Institute of Chemical Physics,Chinese Academy of Sciences,Dalian 116023,Liaoning,China%Ministry of Education Key Laboratory for the Synthesis and Application of Organic Functional Molecules,School of Chemistry and Chemical Engineering,Hubei University,Wuhan 430062,Hubei,China
• Subjects: acidity; Applied sciences; Catalysis; Catalysts; Catalysts: preparations and properties; Chemistry; Energy; Exact sciences and technology; Fuel processing. Carbochemistry and petrochemistry; Fuels; General and physical chemistry; methanol-to-olefin (MTO); modification; Natural gas; NH3-TPD; Oxalic acid; Performance enhancement; SAPO-34; SAPO-34分子筛; Scanning electron microscopy; Selectivity; Surface chemistry; Theory of reactions, general kinetics. Catalysis. Nomenclature, chemical documentation, computer chemistry; XRD; X射线荧光光谱; 催化性能; 烯烃反应; 甲醇; 酸处理; acidity; SAPO-34; oxalic acid; modification; methanol-to-olefin (MTO); Modification; Aluminium Silicon Phosphates; Hydrocarbon; Cross polarization; Acidity; NMR spectrometry; Molecular sieve; Primary alcohol; Magic angle; Characterization; Solid state; Olefin; Oxalic acid; Silicon 29; Dicarboxylic acid; Thermal analysis; Catalyst activity; Ethylenic compound; Methanol; methanol-to-olefin(MTO)
• ISSN: 1003-9953
• DOI: 10.1016/S1003-9953(11)60387-3

An effective route to improve the catalytic performance of SAPO-34 in the methanol-to-olefin reaction by simple oxalic acid treatment was investigated. The samples were characterized by XRD, SEM, N2 adsorption-desorption, XRF, TG, 29Si MAS NMR and NH3-TPD techniques. The results indicated that the external surface acidity of SAPO-34 was finely tuned by oxalic acid treatment, and the selectivity to C2H4 on SAPO-34 and the catalyst lifetime in the methanol-to-olefin reaction were greatly improved.