نتایج جستجو برای: mfi nano zeolite membrane

تعداد نتایج: 447492  

Journal: :Molecular informatics 2010
M Lach-Hab S Yang I I Vaisman E Blaisten-Barojas

Informatics approaches play an increasingly important role in the design of new materials. In this work we apply unsupervised statistical learning for identifying four framework-type attractors of zeolite crystals in which several of the zeolite framework types are grouped together. Zeolites belonging to these super-classes manifest important topological, chemical and physical similarities. The...

2011
Takahiko Moteki Yoichi Murakami Suguru Noda Shigeo Maruyama Tatsuya Okubo

RECEIVED DATE (to be automatically inserted after your manuscript is accepted if required according to the journal that you are submitting your paper to) Preparation of high-quality single-walled carbon nanotubes (SWNTs) has been advanced by controlling several parameters including the catalyst and the catalyst support material. Although zeolite has been frequently used as a catalyst support ma...

Journal: :Nanoscale 2010
Nermin Seda Kehr Andreas Schäfer Bart Jan Ravoo Luisa De Cola

Microcontact printing (mCP) is used to immobilize dyes and peptides asymmetrically, by a "peptide coupling" reaction, on monolayers of zeolite L crystals in the contact area between the stamp and the surface of the monolayer. Chemically patterned surfaces of monolayers of zeolite L crystals are obtained by using patterned stamps with different ink solutions. Additional printing of functionalize...

Journal: :Acta Crystallographica Section A Foundations of Crystallography 2004

2016
Kyong-Hwan Chung Hyunwoong Park Ki-Joon Jeon Young-Kwon Park Sang-Chul Jung Xiaoguang Duan

The catalytic properties of microporous zeolite catalysts were evaluated in the synthesis of decyl glucoside from glucose with 1-decanol by direct glucosidation. The effects of the acidic properties and pore structure of the zeolite catalysts on the glucose conversions and decyl glucoside yields were investigated. The conversions of glucose on the H+ ion-exchanged FAU, MFI, and BEA zeolite cata...

Abdolreza Moghadassi, E. Bagheripour F. Amiri F. Parvizian

In the present study, mixed matrix PES/zeolite nanoparticles nanofiltration membranes were prepared via the solution casting technique. The effect of zeolite concentration on the PES membrane performance and its properties was studied. Cross-sectional scanning electron microscope (SEM) observations showed that the porosity in the membrane sub-layer was increased with addition of zeolite into th...

Journal: :Chemical communications 2015
Tian-Lu Cui Xin-Hao Li Li-Bing Lv Kai-Xue Wang Juan Su Jie-Sheng Chen

The Kirkendall effect was utilized to synthesize mesoporous silicalite-1 zeolite nanocrystals without the involvement of additional templates. The mesopore size as well as the particle size can be easily controlled by nanoscale Kirkendall growth via significantly reducing the amount of water or tetrapropylammonium hydroxide, which were used in large quantities in conventional methods. The Kirke...

Journal: :Angewandte Chemie 2015
Limin Ren Qiang Guo Prashant Kumar Marat Orazov Dandan Xu Saeed M Alhassan K Andre Mkhoyan Mark E Davis Michael Tsapatsis

Single-unit-cell Sn-MFI, with the detectable Sn uniformly distributed and exclusively located at framework sites, is reported for the first time. The direct, single-step, synthesis is based on repetitive branching caused by rotational intergrowths of single-unit-cell lamellae. The self-pillared, meso- and microporous zeolite is an active and selective catalyst for sugar isomerization. High yiel...

Journal: :Chemical communications 2015
H-T Chien M-C Chen P-S Huang J-Y Lai C-C Hsu D-Y Kang

We present a novel approach to remove the structure-directing agent (SDA) from as-synthesized zeolites using an atmospheric pressure plasma jet (APPJ). This reduces the time required to less than 60 seconds as compared to the existing thermal calcination, whose durations range from hours to days. The highly reactive plasma also results in a pronounced Q(3)-to-Q(4) transformation in the pure-sil...

Journal: :ماشین های کشاورزی 0
حسین میرزایی مقدم محمد هادی خوش تقاضا محسن برزگر بفروئی علی سلیمی

in this research, kiwifruits (hayward) were selected in two mass ranges (large and small). they were placed in one-liter glass bottles in the vicinity of the polyethylene sachets containing potassium permanganate nano-zeolite (0, 0.2, 0.4 and 0.8 g) and were stored in a germinator (5°c temperature and 30% relative humidity). then, the physicochemical properties of the fruits (soluble solid cont...

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