Surface Acidity and Catalytic Activities of Zeolite CF-2

Abstract

Abstract: CF-2 is a novel type of highly siliceous zeolite first synthesized in laboratory from glycerine-Na₂O-SiO₂-Al₂O₃-H₂O system with structure similar our to Theta-1, ISI-1, KZ-2, Nu-10 and ZSM-22. The surface acidity and catalytic activities of CF-2 zeolites with different SiO₂/Al₂O₃ ratios have been studied. TPDresults suggest that there are two types of acid sites on CF-2. In comparison to HZSM-5, CF-2 zeolites have less acid sites and lower acid strengths. CF2 zeolites, especially the sample with low SiO₂/Al₂O₃ ratio, show catalytic activities towards cumene and n-hexane cracking, xylene isomerization and met-hanol conversion reactions. Unlike HZSM-5, CF-2 zeolite favours dimethylether and aliphatics over aromatics in the methanol conversion reaction.

Key words: CF-2 zeolite, Surface acidity, Cumene cracking, n-Hexane cracking, Xylene isomerization, Methanol conversion

TrendMD:

Chen Xiangxiong, Li Quanhua, Gao Zi . Surface Acidity and Catalytic Activities of Zeolite CF-2[J]. Chem. J. Chinese Universities, 1988, 9(9): 972.

[1]	WU Shuaini, ZHU Pengfei, SHI Huaiqi, LI Na, HU Zhaoxia, CHEN Shouwen. Preparation of CoCr_x/SAPO-34 Catalyst and Its Catalytic Combustion Performance for 1，2-Dichloroethane [J]. Chem. J. Chinese Universities, 2021, 42(12): 3731.
[2]	CHEN Wenya, ZHU Li, HE Jun, XIE Yunlong, LU Jiqing, LUO Mengfei. Preparation of Rh/Al₂O₃-Cr₂O₃ Monolithic Catalysts for Dichloromethane Combustion^† [J]. Chem. J. Chinese Universities, 2017, 38(4): 606.
[3]	SONG Li-Juan*, PAN Ming-Xue, QIN Yu-Cai, JU Xiu-Fang, DUAN Lin-Hai, CHEN Xiao-Lu. Selective Adsorption Desulfurization Performance and Adsorptive Mechanisms of NiY Zeolites [J]. Chem. J. Chinese Universities, 2011, 32(3): 787.
[4]	LIU Chang-Kun, YIE Zhao-Hui . NMR and FTIR Characterization of Surface Acidity of Fluorinated γ-Asl₂O₃ [J]. Chem. J. Chinese Universities, 2002, 23(10): 1952.
[5]	BAO Jia-Qing, XIE Zai-Ku, LU Xian, CHEN Qing-Ling . Distribution of Silicon and Aluminium Atoms as Well as Surface Acid Properties of Aluminated β Zeolite [J]. Chem. J. Chinese Universities, 2002, 23(10): 1930.
[6]	TIAN Peng, XU Lei, LIU Zhong-Min, SUN Cheng-Lin, HUANG Tao . Synthesis and Characterization of SAPO-56, a New Member of Silicoaluminophosphate [J]. Chem. J. Chinese Universities, 2001, 22(6): 991.
[7]	LIN Wen-Yong, PANG Wen-Qin, WEI Chang-Ping, LI Dong-Mei, ZHEN Kai-Ji . Synthesis and Characterization of H-form Aluminosilicate MCM-41 in a Novel Alkali-metal Free Media [J]. Chem. J. Chinese Universities, 1999, 20(10): 1495.
[8]	TU Mai, LI Da-Tang, SHEN Jian-Yi, CHEN Yi . Microcalorimetric Studies of Surface Acidity and Basicity of Metal Oxides [J]. Chem. J. Chinese Universities, 1998, 19(6): 946.
[9]	WANG Qing-Gen, TU Mai, WANG Wei-Dong, SHEN Jian-Yi. Studies of Surface Acidity and Basicity of the Attapulgite [J]. Chem. J. Chinese Universities, 1997, 18(4): 625.
[10]	CHANG Chun, ZHANG Wu-Yang, ZHANG Li-Hua, LI Rong-Sheng, TIAN Ming-Wen, YANG Xu-Wei, HOU Li. Studies on Preparation of LaHZSM-5 by Microwave Technique and Its Cracking Properties [J]. Chem. J. Chinese Universities, 1996, 17(12): 1914.
[11]	JIANG Ting-Shun, SUNT Tie, SHEN Jian-Ping, JIANG Da-Zhen, Min En-Ze. Studies on the Surface Acidity and Catalytic Properties of Pillared Ga-Substituted Saponite [J]. Chem. J. Chinese Universities, 1994, 15(1): 93.
[12]	MENG Xian-Ping, JI Tian-Hao, PANG Wen-Qin . Studies on the Solidification and Characterizations of USY Type Molecular Sieve-Kaolin by Hydrothermal Hot-Pressing Technique [J]. Chem. J. Chinese Universities, 1993, 14(6): 741.
[13]	Liu Zi-yang, Jiang Da-zhen, Zhang Ai-jun, Fan Shu-guang, Min En-ze, He Ming-yuan, Zhao Xue-bin. Synthesis, Characterization and Catalytic Activity of Saponites and Their Pillared Analogues [J]. Chem. J. Chinese Universities, 1991, 12(4): 502.
[14]	Xu Guo-lin, Xu Heng-yong, Sun Xi-xian, Tian Ying, Zhang Ying-zhen, Zheng Lu-bin. Studies on Dealuminated Faujasite Zeolites (Ⅳ)--Catalytic Cracking of Cumene [J]. Chem. J. Chinese Universities, 1991, 12(3): 368.
[15]	Jiao Qingzhe, Jiang Dazhen, Fan Shuguang, Cao Jianhua . Catalytic Characterization of the Dealuminized Faujusite ——Effect of the Nonframework Aluminiun [J]. Chem. J. Chinese Universities, 1989, 10(7): 729.

Surface Acidity and Catalytic Activities of Zeolite CF-2

PDF (PC)

Knowledge

Abstract

Cite this article

share this article

References

Related Articles 15

Recommended Articles

Metrics

Comments