检索结果-南通市图书馆

AlCl_(3)modified Pd/Al_(2)O_(3)catalyst for enhanced anthraquinone hydrogenation

Chinese Journal of Chemical Engineering 2023年第12期64卷 271-280页

作者： Qinqin Yuan Jingyue Liang Wei Li Jinli Zhang Cuili Guo School of Chemical Engineering and Technology Tianjin UniversityTianjin 300350China

Anthraquinone hydrogenation to produce H_(2)O_(2) is an economically interesting reaction with great industrial ***,we report a series of Pd/xAl catalysts with different AlCl_(3) contents by a conventional stepwise impregnation *** optimal Pd/1.0Al catalyst exhibits a higher performance toward anthraquinone hydrogenation with 8.3 g·L^(-1)hydrogenation efficiency,99.5%selectivity and good stability,obviously superior to that of Pd/Al_(2)O_(3) catalyst(5.2 g·L^(-1)and 97.2%).Detailed characterization demonstrates that AlCl_(3) can be grafted on the γ-Al_(2)O_(3) support to obtain a modified support with abundant surface weak acid and Lewis acid,which can adsorb and activate ***,its steric hindrance could isolate and disperse active metals to form more active *** synergies between metal sites and acid sites promotes the anthraquinone ***,the good stability after grafting AlCl_(3) could attribute to the enhanced metal-support interaction inhibiting metal particles agglomeration and leaching.

关键词： AlCl_(3) Pd-based catalyst H_(2)O_(2) weak acid Hydrogenation

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Removal of Low-concentration Ammonia from Ambient Air by Aluminophosphates

引用

Chemical Research in Chinese Universities 2018年第3期34卷 480-484页

作者： LI Chunyang WU Shujie YU Guiyang YANG Xuwei LIU Gang ZHANG Wenxiang Key Laboratory of Surface and Interface Chemistry of Jilin Province College of Chemistry Jilin University Changchun 130021 P. R. China

A series of aluminumphosphate materials was prepared and used as adsorbents for the removal of ammonia at low concentrations. The influence of various preparation parameters, including the pH value of sol, calcination temperature and molar ratio of P/A1, on the structure and surface properties as well as adsorption capacity was investigated. The results showed that large amount of P-OH present on the surface of aluminophosphates was suitable for the removal of ammonia. They were the major source of weak Br6nsted acid sites and acted as the main active centers for capturing ammonia.

关键词： Ammonia adsorption Aluminophosphate Air purification weak acid Porous material

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

欢迎您,

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

请选择保存的检索档案：

请选择收藏分类：

通借通还

欢迎您,

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：