全部 标题 作者
关键词 摘要

OALib Journal期刊
ISSN: 2333-9721
费用:99美元

查看量下载量

相关文章

更多...
化工学报  2015 

Zn助剂对WC/HZSM-5催化正己烷芳构化性能影响

DOI: 10.11949/j.issn.0438-1157.20141298, PP. 553-560

Keywords: 碳化钨,HZSM-5,分子筛,,催化剂,正己烷,芳构化,活性

Full-Text   Cite this paper   Add to My Lib

Abstract:

以WC/HZSM-5为前驱体制备了一系列不同Zn含量的Zn-WC/HZSM-5催化剂,采用X射线衍射、扫描电子显微镜、N2物理吸附、傅里叶变换红外光谱和热重分析等手段对Zn-WC/HZSM-5的晶相、形貌、比表面积、酸性质、积炭量等进行了表征,并研究了正己烷芳构化的催化性能,探究了助剂Zn与WC在反应过程中的作用。结果表明,Zn的引入可以提高催化剂的芳烃选择性和芳烃收率。当Zn负载量为1.5%(质量分数)时,所制备的Zn-WC/HZSM-5催化剂芳构化活性最佳,芳烃收率达到36.18%。Zn的引入不仅改变了WC/HZSM-5表面的酸性分布,而且可以减少WC/HZSM-5催化剂的积炭量。

References

[1]  Luo Yantuo (罗艳托), Ding Shaoheng (丁少恒), Gong Manying (龚满英). Our high-grade gasoline consumption status and demand forecast [J]. International Petroleum Economics (国际石油经济), 2008, 16 (8): 61-70
[2]  Shi Meiqin (施梅勤), Chen Ningning (陈宁宁), Ma Chun'an (马淳安), Li Ying (李瑛), Wei Aiping (魏爱平). Catalytic performance of bi-functional WC/HZSM-5 catalysts for n-hexane aromatization [J]. Chinese Journal of Catalysis (催化学报), 2012, 33 (3): 570-575
[3]  Janjic N, Scurrell M S. Evidence for the enhancement of the catalytic action of Zn-ZSM-5-based catalysts for propane aromatization using microwave radiation [J]. Catalysis Communications, 2002, 3 (6): 253-256
[4]  Lubango L M, Scurrell M S. Light alkanes aromatization to BTX over Zn-ZSM-5 catalysts: enhancements in BTX selectivity by means of a second transition metal ion [J]. Applied Catalysis A: General, 2002, 235 (1/2): 265-272
[5]  Fang Y, Tang J, Huang X, Shen W, Song Y, Sun C. Aromatization of dimethyl ether over Zn/H-ZSM-5 catalyst [J]. Chinese Journal of Catalysis, 2010, 31 (3): 264-266
[6]  Li Y, Liu S, Xie S, Xu L. Promoted metal utilization capacity of alkali-treated zeolite: preparation of Zn/ZSM-5 and its application in 1-hexene aromatization [J]. Applied Catalysis A: General, 2009, 360 (1): 8-16
[7]  Niu X, Gao J, Miao Q, Dong M, Wang G, Fan W, Qin Z, Wang J. Influence of preparation method on the performance of Zn-containing HZSM-5 catalysts in methanol-to-aromatics [J]. Microporous and Mesoporous Materials, 2014, 197: 252-261
[8]  Xiong Z T, Zhang H B, Lin G D, Zeng J L. Study of W/HZSM-5-based catalysts for dehydro-aromatization of CH4 in absence of O2 (Ⅱ): Action of promoters Zn and Li [J]. Catalysis Letters, 2001,74 (3/4): 233-239
[9]  Liu Xingyun (刘兴云), She Liqin (佘励勤), Li Xuanwen (李宣文), Yang Lichang (杨立长). Aromatization cationic modified ZSM-5 zeolite and its infrared spectrum [J]. Acta Petrolei Sinica: Petroleum Processing Section (石油学报:石油加工), 1986, 21 (2): 41-49
[10]  Liu Xingyun (刘兴云), Li Xuanwen (李宣文), She Liqin (佘励勤), Yuan Shibin (袁世斌), Qin Haoyu (秦皓昱). Aromatic hydrocarbon molecules on a zinc-modified ZSM-5 zeolite structured (Ⅰ): Formation and characterization of the active site [J]. Acta Petrolei Sinica: Petroleum Processing Section (石油学报:石油加工), 1988, 23 (4): 36-43
[11]  Wang Jinying (王金英), Li Wenhuai (李文怀), Hu Jinxian (胡津仙). Study of methanol to aromatics on ZnHZSM-5 catalyst [J]. Journal of Fuel Chemistry and Technology (燃料化学学报), 2009, 37 (5): 607-612
[12]  Liu Weiqiao (刘维桥), Lei Weining (雷卫宁), Shang Tongming (尚通明), Li Weihua (李卫华), Zhou Quanfa (周全法), Wang Hengqiang (王恒强), Ren Jie (任杰). Physicochemical and methanol aromatization property of HZSM-5 catalyst promoted by Zn [J]. Chemical Industry and Engineering Progress (化工进展), 2011, 30 (9): 1967-1971
[13]  Keller V, Wehrer P, Garin F, Ducros R, Maire G. Catalytic activity of bulk tungsten carbides for alkane reforming (Ⅰ): Characterization and catalytic activity for reforming of hexane isomers in the absence of oxygen [J]. Journal of Catalysis, 1995, 153 (1): 9-16
[14]  Zhu Guangzhong (朱光中). n-Hexane aromatization reaction in some of the metal-modified ZSM-5 [J]. Journal of Huizhou University: Nat. Sci. (惠州大学学报:自然科学版), 1996, 16 (4): 40-44
[15]  Urata K, Furukawa S, Komatsu T. Location of coke on H-ZSM-5 zeolite formed in the cracking of n-hexane [J]. Applied Catalysis A: General, 2014, 475: 335-340
[16]  Ni Y, Sun A, Wu X, Hai G, Hu J, Li T, Li G. The preparation of nano-sized H[Zn, Al]ZSM-5 zeolite and its application in the aromatization of methanol [J]. Microporous and Mesoporous Materials, 2011, 143 (2/3): 435-442
[17]  Yin Shuangfeng (尹双凤), Lin Jie (林洁), Yu Zhongwei (于中伟). Zinc content of Zn/HZSM-5 catalyst performance [J]. Chinese Journal of Catalysis (催化学报), 2001, 22 (1): 57-61
[18]  Yin Shuangfeng (尹双凤), Chen Yi (陈懿), Lin Jie (林洁), Yu Zhongwei (于中伟). An investigation on mechanism for aromatization of n-hexane on Zn/HZSM-5 catalyst [J]. Industrial Catalysis (工业催化), 2002, 10 (1): 33-37
[19]  Triwahyono S, Jalil A A, Mukti R R, Musthofa M, Razali N A M, Aziz M A A. Hydrogen spillover behavior of Zn/HZSM-5 showing catalytically active protonic acid sites in the isomerization of n-pentane [J]. Applied Catalysis A: General, 2011, 407 (1/2): 91-99
[20]  Wang Dongjie (王冬杰). Promoter aromatization of methane catalytic performance studies on Mo/HZSM-5 [D]. Hangzhou: Zhejiang University, 2003
[21]  Yang Xiyao (杨锡尧), Pan Yun (潘韫), Pang Li (庞礼). Under pressure Pt/Al2O3 n-heptane dehydrogenation catalyst aromatization activity center [J]. Chinese Journal of Catalysis (催化学报), 1985, 6 (3): 288-291

Full-Text

Contact Us

service@oalib.com

QQ:3279437679

WhatsApp +8615387084133