检索结果-南通市图书馆

EFFECT OF SOLVENT ON zeolite synthesis

Journal of Energy Chemistry 1996年第4期 351-356页

作者： FENG Fang-Xia DOU Tao XIAO Yong-Zhuang CAO Jing-Hui(Institute of Special Chemicals, Taiyuan University of Technology Taiyuan, Shanxi 030024)

zeolite ZSM-35 was synthesized from a dry powder system with an adsorbed-state template, When water. ethylene glycol and ethanol amine as solvents were added into the system of Na2O-SiO2-Al2O3-EDA(ethyenediamine), respectively. ZSM-5 and sodalite were *** properties of samples were charaeterized by means of XRD. SEM and IR The results showed that different solvents induced different structures of zeolites and had effect on physicochemical charaeteristics of zeolites

关键词： zeolite synthesis ZSM-35 ZSM-5 sodalite solvent

来源：

同方期刊数据库评论

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

zeolite synthesis FROM A HIGH SI-AL-FLY ASH FROM EAST CHINA

ZEOLITE SYNTHESIS FROM A HIGH SI-AL-FLY ASH FROM EAST CHINA

引用

中国科学院地质与地球物理研究所2002学术年会

作者： J.C.Umaa X.Querol A.Lopez-Soler F.Plana Instittute of Earth Sciences CSICLluis Sole i Sabaris s/n.08028-Barcelona Spain

A high Al-Si Chinese fly ash from Dou He power plant(Tangshan city,Hebei Province, Eastern China) was selected as starting material of the zeolitization *** material was obtained by conventional alkaline activation by using NaOH and KOH *** synthesis process was optimized by applying a wide ranges of reaction temperature,time and activation agent concentrations.A high solution / fly ash ratio was used in order to allow dissolution of highly resistant Al-Si phases such as *** synthesis yields were obtained by using both KOH and NaOH *** products reached a cation exchange capacity(CEC) up to 2.3 meq *** zeolites obtained with a high CEC were:NaP1,KM and F linde *** low contents of major impurities of this fly ash enhance the potential application for the synthesis of zeolites for waste water treatment.

关键词： fly ash zeolite synthesis coal-fired power plant China

来源： cnki会议评论

在线全文

cnki会议

学校读者我要写书评

暂无评论

Designing ABC-6 family small pore zeolites by epitaxial growth approach

引用

Chinese Chemical Letters 2024年第3期35卷 508-512页

作者： Xiaohui Cui Jia Lv Chao Ma Yujiao Wang Zhenghao Jia Daliang Zhang Peng Guo Zhongmin Liu Henan Institute of Advanced Technology Zhengzhou UniversityZhengzhou 450001China National Engineering Research Center of Lower-Carbon Catalysis Technology Dalian Institute of Chemical PhysicsChinese Academy of SciencesDalian 116023China Multi-scale Porous Materials Center Institute of Advanced Interdisciplinary Studies&School of Chemistry EngineeringChongqing UniversityChongqing 400044China University of Chinese Academy of Sciences Beijing 100049China Division of Energy Research Resources Dalian Institute of Chemical PhysicsChinese Academy of SciencesDalian 116023China

Aluminosilicate small pore zeolites belonging to ABC-6 family play crucially important roles in the high methanol conversion with the high selectivity of light olefins,gas separation and storage,and selective catalytic reduction of NO_(x).In this work,we report a general method,called the epitaxial growth approach,for designing ABC-6 family small pore *** is mainly realized through the epitaxial growth on the nonporous SOD-type zeolite in the presence of inorganic cations(Na^(+)and K^(+))combined with a variety of organic structure directing agents(OSDAs).In this case,a series of ABC-6 family small pore zeolites such as ERI-,SWY-,LEV-,AFX-,and PTT-type zeolites have been successfully synthesized within a few *** importantly,the advanced focused ion beam(FIB)and the low-dose high-resolution transmission electron microscopy(HRTEM)imaging technique have been utilized for unraveling the zeolite heterojunction at the atomic level during the epitaxial growth *** turns out(222)crystallographic planes of the SOD-type zeolite substrate provide unique pre-building units,which facilitate the growth of targeted ABC-6 family small pore zeolites along its ***,the morphologies of ERI-type zeolite can also be tuned through the epitaxial growth approach,achieving a longer lifetime in the methanol conversion.

关键词： zeolite structure zeolite synthesis Structural characterizations Low-dose imaging Focused ion beam

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

Studies on the synthesis, Properties and Preparation Methods of zeolite ZK-4

引用

Chemical Research in Chinese Universities 2000年第4期16卷 306-312页

作者： ZHAO Zhen-hua and YIN Du-lin (Department of Chemistry, Hunan Normal University, Changsha 410081, P. R. China) 湖南师范大学湖南长沙 410081

A zeolite designated as ZK-4 was synthesized hydrothermally in the system (TMA)2ONa2O-Al2O3- SiO2- H2O at 80 - 100℃ with tetramethylammonium hydroxide as an organic templating agent. The pure zeolite ZK-4 could be prepared by using the mother liquor obtained after filtration as the source of templating agent. The effect of some synthetic conditions such as the amount of tetramethylammonium hydroxide used, n [ (TMA)2O + Na2O] /n (Al2O3) ratio, n (SiO2)/n(Al2O3) ratio and crystallization time, etc. on the crystalline phase of the product was investigated. When the following molar ratios of the reaction mixture, n (SiO2)/n (Al2O3) 4-10, n[(TMA)2O+Na2O]/ n (Al2O3 ) > 7, n (Na2O)/n (Al2O3)=0. 5-2. 0, n (H2O)/ n(A12O3)=80-450, were used, pure zeolite ZK-4 could be obtained. The synthetic products were characterized by X-ray powder diffraction, atomic absorption spectrophotometry (AAS), adsorption measurement, thermogravimetric analysis(TGA), and 29Si magic angle spinning nuclear magnetic resonance technique. zeolite ZK-4 has a higher thermal stability than sodium zeolite A due to higher n(Si)/n(Al) ratio of zeolite ZK-4.

关键词： zeolite ZK-4 Molecular sieve zeolite synthesis Property,Tetramethylammonium hydroxide template

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

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

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

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：