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Mesoporosity was introduced into the ZSM-5 zeolites by alkaline treatment and the external acid sites were passivated selectively via adsorption of phosphate anions on the surfactant modified surface. The results showed that the mesoporosity was successfully obtained after alkaline treatment, meanwhile, the external acid sites increased and the selectivity decreased. A monolayer or bilayer structutre of surfactant on the surface of zeolites could be formed in the different concentrations of surfactant solutions. The monolayer structure did not absorb the phosphate anions. While the bilayer structure selectively absorbed the phosphate anions on the external surface, which could passivate the external acid sites after calcining. The modified zeolites had high activity, stability and selectivity in the isomerization of styrene oxide with yield of phenylacetaldehyde more than 95% and no significant deactivation after 100 h time on stream.

, authors=Minglei GOU, Junkai WANG, Wensheng SONG, authorsList=Minglei GOU, Junkai WANG, Wensheng SONG, authorCompany=null, correspAuthors=null, authorNote=

GOU Minglei (1984-), male, Ph.D., Associate Professor. E-mail:

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采用碱处理方法在ZSM-5沸石晶体中引入了一定的介孔孔道,然后采用磷改性方法选择性地对表面活性剂修饰后的外表面酸性位进行钝化。结果表明,碱处理能够在ZSM-5沸石晶体中引入一定的介孔结构,同时也造成了外表面酸性位增加和反应选择性的下降。介孔沸石在不同浓度的表面活性剂溶液中达到吸附平衡时分别形成了单层吸附结构和双层吸附结构,单层吸附结构的表面活性剂几乎不吸附磷酸根离子,而双层吸附结构的表面活性剂能够吸附磷酸根离子,在煅烧除去表面活性剂后磷酸根离子与沸石外表面接触并选择性地钝化了外表面酸性位,得到了高活性、高稳定性和高选择性的催化剂,氧化苯乙烯重排生成苯乙醛的产率可达95%以上,且连续运行100 h未发现明显失活。

, authors=勾明雷, 王俊锴, 宋文生, authorsList=勾明雷, 王俊锴, 宋文生, authorCompany=null, correspAuthors=null, authorNote=

勾明雷(1984—),男,博士,副教授。

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GOU Minglei (1984-), male, Ph.D., Associate Professor. E-mail:

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勾明雷(1984—),男,博士,副教授。

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介孔ZSM-5沸石外表面酸性位选择性钝化及其催化性能
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勾明雷 , 王俊锴 , 宋文生
硅酸盐学报 | 2020,48(12): 1960-1965
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硅酸盐学报 | 2020 , 48 (12) : 1960 -1965
介孔ZSM-5沸石外表面酸性位选择性钝化及其催化性能
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勾明雷 , 王俊锴, 宋文生
作者信息
  • 河南科技大学化工与制药学院,河南 洛阳 471023
作者简介:

勾明雷(1984—),男,博士,副教授。

Mesoporous ZSM-5 Zeolites with External Acid Sites Selective Passivation and Their Catalytic Performances
Minglei GOU , Junkai WANG, Wensheng SONG
Affiliations
  • School of Chemical Engineering and Pharmaceutics, Henan University of Science and Technology, Luoyang 471023, Henan, China
  • GOU Minglei (1984-), male, Ph.D., Associate Professor. E-mail:

出版时间: 2020-12-20 doi: 10.14062/j.issn.0454-5648.20200302
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采用碱处理方法在ZSM-5沸石晶体中引入了一定的介孔孔道,然后采用磷改性方法选择性地对表面活性剂修饰后的外表面酸性位进行钝化。结果表明,碱处理能够在ZSM-5沸石晶体中引入一定的介孔结构,同时也造成了外表面酸性位增加和反应选择性的下降。介孔沸石在不同浓度的表面活性剂溶液中达到吸附平衡时分别形成了单层吸附结构和双层吸附结构,单层吸附结构的表面活性剂几乎不吸附磷酸根离子,而双层吸附结构的表面活性剂能够吸附磷酸根离子,在煅烧除去表面活性剂后磷酸根离子与沸石外表面接触并选择性地钝化了外表面酸性位,得到了高活性、高稳定性和高选择性的催化剂,氧化苯乙烯重排生成苯乙醛的产率可达95%以上,且连续运行100 h未发现明显失活。

ZSM-5  /  介孔沸石  /  外表面酸性位  /  钝化  /  催化性能

Mesoporosity was introduced into the ZSM-5 zeolites by alkaline treatment and the external acid sites were passivated selectively via adsorption of phosphate anions on the surfactant modified surface. The results showed that the mesoporosity was successfully obtained after alkaline treatment, meanwhile, the external acid sites increased and the selectivity decreased. A monolayer or bilayer structutre of surfactant on the surface of zeolites could be formed in the different concentrations of surfactant solutions. The monolayer structure did not absorb the phosphate anions. While the bilayer structure selectively absorbed the phosphate anions on the external surface, which could passivate the external acid sites after calcining. The modified zeolites had high activity, stability and selectivity in the isomerization of styrene oxide with yield of phenylacetaldehyde more than 95% and no significant deactivation after 100 h time on stream.

zeolite socony mobil-5  /  mesoporous zeolite  /  external acid site  /  passivation  /  catalytic performance
勾明雷, 王俊锴, 宋文生. 介孔ZSM-5沸石外表面酸性位选择性钝化及其催化性能. 硅酸盐学报, 2020 , 48 (12) : 1960 -1965 . DOI: 10.14062/j.issn.0454-5648.20200302
Minglei GOU, Junkai WANG, Wensheng SONG. Mesoporous ZSM-5 Zeolites with External Acid Sites Selective Passivation and Their Catalytic Performances[J]. Journal of the Chinese Ceramic Society, 2020 , 48 (12) : 1960 -1965 . DOI: 10.14062/j.issn.0454-5648.20200302
  • 河南科技大学博士科研基金项目(4008-13480049)
  • 河南省重点攻关项目(182102310795)
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2020年第48卷第12期
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doi: 10.14062/j.issn.0454-5648.20200302
  • 接收时间:2020-04-28
  • 首发时间:2026-10-30
  • 出版时间:2020-12-20
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  • 收稿日期:2020-04-28
  • 修回日期:2020-05-19
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河南科技大学博士科研基金项目(4008-13480049)
河南省重点攻关项目(182102310795)
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    河南科技大学化工与制药学院,河南 洛阳 471023
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鹅膏菌科Amanitaceae 2 11 5.26 鹅膏菌属 Amanita 10 4.78
小菇科 Mycenaceae 2 12 5.74 丝盖伞属 Inocybe 5 2.39
多孔菌科 Polyporaceae 8 14 6.70 蜡蘑属 Laccaria 5 2.39
红菇科 Russulaceae 3 23 11.00 小皮伞属 Marasmius 6 2.87
小菇属 Mycena 11 5.26
光柄菇属 Pluteus 5 2.39
红菇属 Russula 17 8.13
栓菌属 Trametes 5 2.39
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