十氢萘在HY和Beta分子筛上加氢开环的研究

摘要

采用高温高压反应釜研究了十氢萘在低硅铝比HY分子筛[n(Si)/n(Al)=3.2]、Beta分子筛n(Si)/n(Al)=9.7]和双功能催化剂Pt-HY、Pt-Beta上的加氢开环反应，考察了分子筛孔道结构及酸性质、贵金属Pt及反应温度等因素对十氢萘转化率和产物选择性的影响。结果表明，十氢萘在Beta分子筛上的转化率较高，且有大量脱氢缩合产物（DHC）生成。Pt引入HY和Beta分子筛后，初始反应速率升高，十氢萘转化率增加，C₁₀产物中开环异构比增大，Beta分子筛上的脱氢缩合反应得到抑制。反应温度升高可以提高十氢萘在HY分子筛上的转化率，使得C₁₀产物选择性下降，而开环异构比（ROP/Iso）增大。

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	张秀荣
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关键词：十氢萘分子筛双功能催化剂催化加氢开环

Abstract：

Hydrogenation and ring opening of decalin over low n(Si)/n(Al) ratio acid catalysts HY[n(Si)/n(Al)=3.2], Beta [n(Si)/n(Al)=9.7]zeolite and bifunctional catalysts Pt-HY, Pt-Beta was investigated in a autoclave stirred reactor. The influences of pore structure, acidity, Pt addition and reaction temperature on the catalytic conversion of decalin and the products selectivity were studied. A higher conversion of decalinand yield of dehydrogenation condensation products (DHC) were obtained on Beta zeolite due to its strong BrØnsted acidities. An enhancement of isomerization and initial ring opening rates was observed in the presence of platinum, resulting in an increased conversion of decalin and ring opening products/isomers ratio (ROP/Iso). Meanwhile, the dehydrogenation-condensation reaction was restrained over the Pt-Beta catalyst. As the reaction temperature increased, the initial activity of the catalysts and the conversion of decalin increased. A decreased selectivity of isomers and ring opening products and increased ROP/Iso were observed on HY zeolite.

Keywords： decalin； zeolites； bifunctional catalysts； catalytic hydrogenation； ring opening

Received 2014-04-18;

Fund:

国家自然科学基金（90916022）。

Corresponding Authors: 王庆法,E-mail:qfwang@tju.edu.cn。 Email: qfwang@tju.edu.cn

About author: 张秀荣(1988-),女,硕士研究生,从事催化加氢方面的研究。

引用本文:

张秀荣, 王庆法, 张香文.十氢萘在HY和Beta分子筛上加氢开环的研究[J]. 化学工业与工程, 2016,33(4): 1-6

Zhang Xiurong, Wang Qingfa, Zhang Xiangwen.Hydrogenation and Ring Opening of Decalin over HY and Beta Zeolites[J]. Chemcial Industry and Engineering, 2016,33(4): 1-6

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