PROBLEM TO BE SOLVED: To provide a synthetic method of ZSM-5 type zeolite by using an extremely small amount of a structure regulation agent. H Yasumasa,堀部 泰正,I Kaoru,... 被引量: 0发表: 2012年 Preparation of synthetic zeolite ZSM-5 The synthesis of zeolite ZSM-5 in the presence ...
ZEOLITE ZSM-5 (ref. 1) is a member of a new class of shape selective catalysts with unique channel structures which differ from the familiar large-pore faujasite and small-pore zeolites such as Linde Type A and erionite. They also possess unusual catalytic properties and have high thermal ...
ZSM-5 (refs 1, 2) is a member of a new class of shape selective catalysts which have unique channel structures with 10-membered ring openings. These catalysts have unusual properties. They can selectively convert methanol to high quality gasoline3–6and are used in commercially significant proce...
Unit cell thick nanosheets of zeolite H-ZSM-5: Structure and activity Nanosheets of zeolite H-ZSM-5 were synthesized and characterized by X-ray diffraction, transmission electron microscopy (TEM), N-physisorption, FT-IR spect... Bleken, Bj??rn-Tore L.,DS Wragg,Arstad, Bj??rnar,... -...
High structure-directing activity and specificity of templating action of tetrapropylammonium cations TPA+ as well as high concentration of framework-forming substances in the initial reaction mixtures contribute to the formation of zeolite ZSM-5 at relatively low temperature (100 °C) in the alkali...
晶化温度的提高和晶化时间的延长有利于分子筛结晶度的提高.与水热合成法相比,采用气相转移法可以减小壳层SAPO-5的颗粒尺寸,减少脱离ZSM-5表面独立生长的SAPO-5的量,改善SAPO-5在ZSM-5表面的分布.重油裂化结果表明,核壳结构复合分子筛对生成低碳烯烃的催化性能优于机械混合的样品.关键词:ZSM-5分子筛;SAPO-5分子筛...
converted into C* to form CH4by hydrogenation, as shown inFig. 13. Hussain et al.[24,132]found high catalytic efficiency of metal-free fibrous silica ZSM-5 and fibrous silica beta in other CO methanation studieszeolitecatalysts for their fibrous morphology, enhancing surface area, pores diameter...
Here, we present a systematic investigation on the effect of acidity on the performance of the zeolite ‘ZSM-5’ for the production of propylene. Our results demonstrate that the isolation of Brønsted acid sites is key to the selective formation of propylene. Also, the introduction of Lewis ...
(47).". The synthetic method quoted from reference 47 (these are the zeolite nanosheets the authors used for imaging): "In a typical synthesis of ZSM-5 nanosheets with different b-axis thicknesses, the synthesis gel with a composition of 1 SiO2:0.0025 Al2O3:0.07 TPAOH:0.07 TPABr:0.8 ...
1. A functional structure comprising: supports each having a porous structure and including a zeolite-type compound; and at least one functional material present in the supports, wherein each of the supports has channels communicating with one another, the functional material is present at least in...