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负载Mo、W氧化物对Y型分子筛结构及酸性的影响

1001-8719(2011)05-0668-06

负载Mo、W氧化物对Y型分子筛结构

及酸性的影响

杨平辛靖李明丰聂红

中国石化石油化工科学研究院,北京100083

摘要:采用等体积浸渍法将Mo、W氧化物负载在USY分子筛上,并通过固体核磁共振、X射线衍射、N2吸附-脱附、NH3程序升温脱附和吡啶红外吸附等分析手段,研究了Mo、W氧化物的负载对USY分子筛结构及酸性的影响。结果表明,当Mo、W氧化物负载质量分数不大于8%时,USY分子筛骨架结构依然存在,但结晶度下降。

Mo、W氧化物的负载造成了分子筛骨架脱铝;且随负载量的增加,分子筛脱铝的程度加深。负载Mo氧化物之后,USY分子筛的总酸量和L酸量增加;但随负载量的提高,总酸量和中强酸降低,B酸减少。负载量相同时,Mo氧化物对分子筛的作用大于W氧化物。

USY分子筛;改性;钼、钨氧化物;酸性

O643.36A10. 3969/j. issn. 1001-8719. 2011.05. 002

Effects of Molybdenum/Tungsten Oxides Loading on the Structure and 

Acidity of Y Zeolites 

YANG PingXIN JingLI MingfengNIE Hong

2010-11-24

第一作者:杨平,女,硕士研究生,从事加氢裂化技术基础研究

通讯联系人:聂红,女,教授级高级工程师,从事石油炼制领域加氢催化剂、工艺研究及技术开发;E-mail:niehong. ripp@ sinopec. com

化物单层分散阀

影响

图3为负载Mo、

化物之后,总酸

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负载Mo、W氧化物对Y型分子筛结构及酸性的影响

作者:杨平, 辛靖, 李明丰, 聂红, YANG Ping, XIN Jing, LI Mingfeng, NIE Hong

作者单位:中国石化石油化工科学研究院,北京,100083

刊名:

石油学报(石油加工)

英文刊名:Acta Petrolei Sinica(Petroleum Processing Section)

年,卷(期):2011,27(5)

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