Effect of ethanol on the isomerization of <em>n</em>-heptane over Pt/SAPO-11 and Pt/ZSM-22 catalysts

CHAI Zhi-bo; LÜ En-jing; ZHANG Huai-ke; REN Jie

Volume 42 Issue 02

Feb. 2014

Turn off MathJax

Article Contents

Article Navigation > Journal of Fuel Chemistry and Technology > 2014 > 42(02): 207-211

CHAI Zhi-bo, LÜ En-jing, ZHANG Huai-ke, REN Jie. Effect of ethanol on the isomerization of n-heptane over Pt/SAPO-11 and Pt/ZSM-22 catalysts[J]. Journal of Fuel Chemistry and Technology, 2014, 42(02): 207-211.

Citation:

CHAI Zhi-bo, LÜ En-jing, ZHANG Huai-ke, REN Jie. Effect of ethanol on the isomerization of n-heptane over Pt/SAPO-11 and Pt/ZSM-22 catalysts[J]. Journal of Fuel Chemistry and Technology, 2014, 42(02): 207-211.

Citation:

PDF( 588 KB)

Effect of ethanol on the isomerization of n-heptane over Pt/SAPO-11 and Pt/ZSM-22 catalysts

1.
Institute of Coal Chemistry, Chinese Academy of Sciences, Taiyuan 030001, China;
2.
University of Chinese Academy of Sciences, Beijing 100049, China;
3.
Synfuels China Co. Ltd, Beijing 101407, China

Received Date: 2013-08-19
Rev Recd Date: 2013-10-09
Publish Date: 2014-02-28

Abstract

Abstract

The hydroisomerization of n-heptane over the Pt/SAPO-11 and Pt/ZSM-22 catalysts prepared by the impregnation methods was systematically investigated in the presence of ethanol. The physicochemical properties, adsorption and reaction behaviors, and active acid sites were studied by X-ray diffraction, N₂-adsorption, C₂H₅OH-TPD and C₂H₅OH-FTIR techniques. A negative impact of alcohol was observed; the activity and selectivity to isomers decreased with the increase of the ethanol amount. Nevertheless, the effect of ethanol on the hydroisomerization over the Pt/SAPO-11 was weaker than that over the Pt/ZSM-22, showing that Pt/SAPO-11 is more resistant to oxygenated compounds due to the presence of a large amount of P-OH groups in SAPO-11. The effect of ethanol on the isomerization of n-heptane occurs through its dehydration into water over the catalysts.
- SAPO-11,
- ZSM-22,
- ethanol,
- n-heptane,
- hydroisomerization

FullText(HTML)

References(16)

References

任杰, 张怀科, 李永旺. F-T合成油品加工技术的研究进展[J]. 燃料化学学报, 2009, 37(6): 769-776. (REN Jie, ZHANG Huai-ke, LI Yong-wang. Research process of the processing technology for Fischer-Tropsch syncrude[J]. Journal of Fuel Chemistry and Technology, 2009, 37(6): 769-776.)

ROSSINI S, CATANI U, CORNARO A, MIGLIO R, PICCOLI V, BUSCA G, TROMBETA M. Oxygenates and nitriles effects on some catalysts for skeletal isomerization of C4 and C5 olefins[C]//Symposium on Catalysis in Fuel Processing and Environmental, 214th National Meeting of the American Chemical Society. Las Vegas, NV, 1997.

张飞, 耿承辉, 高志贤, 周敬来. 长链正构烷烃临氢异构化Pt/SAPO-11催化剂的研究: Ⅰ. 不同添加物对催化性能的影响[J]. 工业催化, 2005, 13(增刊): 43-48. (ZHANG Fei, GENG Cheng-hui, GAO Zhi-xian, ZHOU Jing-lai. Study on the hydroisomerization of long-chain alkane on Pt/SAPO-11 I. The effects of different additives on the catalytic performance[J]. Industrial Catalysis, 2005, 13(supp1): 43-48.)

GUEDES A S, FONTAINE C, BOUCHY C, BRUNET S. Inhibiting effect of decan-1-ol on the transformation of n-hexadecane over a Pt/SiO₂-Al₂O₃ catalyst[J]. Appl Catal B: Environ, 2010, 100(1/2): 165-172.

LECKEL D. Selectivity effect of oxygenates in hydrocracking of Fischer-Tropsch waxes[J]. Energy Fuel, 2007, 21(2): 662-667.

CORMA A, MARIE O, ORTEGA F J. Interaction of water with the surface of a zeolite catalysts during catalytic cracking: A spectroscopy and kinetic study[J]. J Catal, 2004, 222(2): 338-347.

常福祥, 刘献斌, 魏迎旭, 齐越, 张大治, 刘忠民. 不同结构分子筛催化剂上甲醇耦合的C₆烷烃裂化反应过程的研究[J]. 石油化工, 2005, 34(增刊): 108-111. (CHANG Fu-xiang, LIU Xian-bin, WEI Ying-xun, QI Yue, ZHANG Da-zhi, LIU Zhong-ming. A mechanistic investigation of the couple reaction of n-hexane and methanol over zeolite catalysts with different structures[J]. Petrochemical Technology, 2005, 34(supp 1): 108-111.)

柳云骐, 田志坚, 徐竹生, 林励吾. 正构烷烃在双功能催化剂上异构化反应研究进展[J].中国石油大学学报(自然科学版), 2002, 26(1): 123-129. (LIU Yun-qi, TIAN Zhi-jian, XU Zhu-sheng, LIN Li-wu. Review of hydroisomerization-hydrocracking reaction of n-alkane on bifunctional catalysts[J]. Journal of University of Petroleum, China (Edition of Natural Science), 2002, 26(1): 123-129.)

HU Y F, WANG X S, GUO X W, LI S L, HU S, SUN H B, BAI L. Effects of channel structure and acidity of molecular sieves in hydroisomerization of n-octane over bifunctional catalysts[J]. Catal Lett, 2005, 100(1/2): 59-67.

黄卫国, 李大东, 石亚华, 康小洪, 孟宪波, 王奎, 董维正, 聂红, 李灿. 分子筛催化剂上正十六烷的临氢异构化反应[J]. 催化学报, 2003, 24(9): 651-657. (HUANG Wei-guo, LI Da-dong, SHI Ya-hua, KANG Xiao-hong, MENG Xian-bo, WANG kui, DONG Wei-zheng, NIE Hong, LI Can. Hydroisomerization of n-hexadecane on zeolites catalysts[J]. Chinese Journal of Catalysis, 2003, 24(9): 651-657.)

张飞, 耿承辉, 高志贤, 周敬来. 正庚烷与正十四烷在Pt/SAPO-11催化剂上临氢异构化[J]. 燃料化学学报, 2004, 32(3): 340-345. (ZHANG Fei, GENG Cheng-hui, GAO Zhi-xian, ZHOU Jing-lai. Hydroisomerization of n-heptane and n-tetradecane over Pt/SAPO-11[J]. Journal of Fuel Chemistry and Technology, 2004, 32(3): 340-345.)

MARTENS J A, JACOBS P A. Synthesis and shape-selective properties of ZSM-22[J]. Appl Catal, 1989, 48(1): 137-148.

WILSON S T, LOK B M, FLANIGEN E M. Crystalline metallophosphate compositions: US, 4310440. 1982-01-12.

BORDIGA S, REGLI L, LAMBERTI C, ZECCHINA A, BJØRGEN M, LILLERUD K P. FTIR adsorption of studies of H₂O and CH₃OH in the isostructural H-SSZ-13 and H-SAPO-34: Formation of H-bonded adducts and protonated clusters[J]. J Phys Chem B, 2005, 109(6): 7724-7728.

HEMELSEOT K, GHYSELS A, MORES D, WISPELAERE K D, SPEYBROECK V V, WECKHUYSEN B M, WAROQUIER M. Experiment and theoretical IR study of methanol and ethanol conversion over H-SAPO-34[J]. Catal Today, 2011, 177(1): 12-24.

HANCSÓK J, KOVÁCS S, PÖLCZMANN Gy, KASZA T. Investigation the effect of oxygentic compounds on the isomerization of bioparaffins over Pt/SAPO-11[J]. Top Catal, 2011, 54(16/18): 1094-1101.

Relative Articles

Supplements(0)

Cited By

Proportional views