Synthesis of ZSM-5/SAPO-34 zeolite composites from LAPONITE® and their catalytic properties in the MTO reaction

CrystEngComm ◽  
2020 ◽  
Vol 22 (37) ◽  
pp. 6182-6188
Author(s):  
Xueshuai Chen ◽  
Rongli Jiang ◽  
Huilin Hou ◽  
Zihan Zhou ◽  
Xingwen Wang
Keyword(s):  
Catalytic Properties ◽  
Secondary Growth ◽  
Mto Reaction ◽  
Growth Method

ZSM-5/SAPO-34 zeolite composites were successfully synthesized via a secondary growth method, and the SAPO-34 part of ZSM-5/SAPO-34 was synthesized from LAPONITE®.

scholarly journals Synthesis of core–shell SAPO-34@SAPO-18 composites by the epitaxial growth method and their catalytic properties for the MTO reaction

RSC Advances ◽  
2017 ◽  
Vol 7 (86) ◽  
pp. 54866-54875 ◽  
Author(s):  
Zhiqiang Xu ◽  
Jianwen Li ◽  
Weixin Qian ◽  
Hongfang Ma ◽  
Haitao Zhang ◽  
...  
Keyword(s):  
Epitaxial Growth ◽  
Catalytic Properties ◽  
Composite Catalyst ◽  
Core Shell ◽  
Mto Reaction ◽  
Growth Method

A core/shell-structured SAPO-34@SAPO-18 composite catalyst was hydrothermally synthesized through the epitaxial growth method.

Synthesis of nano-ZSM-5 zeolite via a dry gel conversion crystallization process and its application in MTO reaction

CrystEngComm ◽  
2021 ◽  
Vol 23 (15) ◽  
pp. 2793-2800
Author(s):  
Xueshuai Chen ◽  
Rongli Jiang ◽  
Yu Gao ◽  
Zihan Zhou ◽  
Xingwen Wang
Keyword(s):  
Crystallization Process ◽  
Catalytic Properties ◽  
Dry Gel Conversion ◽  
Mto Reaction ◽  
Conversion Method

Nano-sized ZSM-5 with superior catalytic properties was synthesized from LAPONITE® as one of the Si sources by a dry gel conversion method.

Pt-porous ZnO nanoribbon hybrid materials with enhanced catalytic performances

CrystEngComm ◽  
2015 ◽  
Vol 17 (8) ◽  
pp. 1765-1768 ◽  
Author(s):  
Zhiqiang Cheng ◽  
Mingyue Yu ◽  
Guixia Yang ◽  
Lijuan Kang
Keyword(s):  
Photocatalytic Degradation ◽  
Co Oxidation ◽  
Hybrid Materials ◽  
Catalytic Properties ◽  
Seeded Growth ◽  
Hybrid Nanomaterial ◽  
Growth Method ◽  
Catalytic Applications ◽  
Catalytic Performances

With the help of bio-molecule l-lysine, a seeded growth method has been developed and Pt–ZnO porous nanoribbons have been successfully obtained. For the catalytic applications of CO oxidation and the photocatalytic degradation of MO, the hybrid nanomaterial exhibits remarkably enhanced catalytic properties.

Synthesis and Characterization of NaA Zeolite Membranes Prepared by the Secondary Growth Method: A Research-Based Comprehensive Experiment

Daxue Huaxue ◽  
2018 ◽  
Vol 33 (9) ◽  
pp. 69-74
Author(s):  
Liangqing LI ◽  
◽  
Qipeng SONG ◽  
Jinjian ZHANG ◽  
Chenchen DAI ◽  
...  
Keyword(s):  
Secondary Growth ◽  
Synthesis And Characterization ◽  
Zeolite Membranes ◽  
Naa Zeolite ◽  
Growth Method

scholarly journals Preparation and Progress in Application of Gold Nanorods

2019 ◽  
Vol 2019 ◽  
pp. 1-11 ◽  
Author(s):  
Liqing Meng ◽  
Jinsheng Zhang ◽  
Huiqin Li ◽  
Weiwei Zhao ◽  
Tonggang Zhao
Keyword(s):  
Optical Properties ◽  
Gold Nanorods ◽  
Secondary Growth ◽  
Disease Diagnosis ◽  
Information Storage ◽  
Hard Template ◽  
Comprehensive Review ◽  
Growth Method ◽  
Seed Method ◽  
Hard Template Method

Gold nanorods (Au NRs) have attracted extensive research interest due to their unique optical properties, adjustable aspect ratio, and easy surface modification in the fields of biosensing, bioimaging, and disease diagnosis and detection. In this review, we present a comprehensive review of various methods for preparing gold nanorods including hard template method, electrochemistry method, photochemistry method, seed-mediated growth method, secondary growth method, and amorphous seed method. The unique optical properties of the gold nanorods and its applications in biomedical, detection, catalysis, and information storage will also be discussed in detail.

scholarly journals Formation Process of Columnar Grown (101)-Oriented Silicalite-1 Membrane and Its Separation Property for Xylene Isomer

Crystals ◽  
2020 ◽  
Vol 10 (10) ◽  
pp. 949
Author(s):  
Motomu Sakai ◽  
Takuya Kaneko ◽  
Yukichi Sasaki ◽  
Miyuki Sekigawa ◽  
Masahiko Matsukata
Keyword(s):  
Secondary Growth ◽  
Microscopic Analysis ◽  
Separation Performance ◽  
Membrane Thickness ◽  
Alumina Support ◽  
Separation Factors ◽  
Growth Method ◽  
Thin Part ◽  
Xylene Separation ◽  
Xylene Isomer

Silicalite-1 membrane was prepared on an outer surface of a tubular α-alumina support by a secondary growth method. Changes of defect amount and crystallinity during secondary growth were carefully observed. The defect-less well-crystallized silicalite-1 membrane was obtained after 7-days crystallization at 373 K. The silicalite-1 membrane became (h0l)-orientation with increasing membrane thickness, possibly because the orientation was attributable to “evolutionally selection”. The (h0l)-oriented silicalite-1 membrane showed high p-xylene separation performance for a xylene isomer mixture (o-/m-/p-xylene = 0.4/0.4/0.4 kPa). The p-xylene permeance through the membrane was 6.52 × 10−8 mol m−2 s−1 Pa−1 with separation factors αp/o, αp/m of more than 100 at 373 K. As a result of microscopic analysis, it was suggested that a very thin part in the vicinity of surface played as effective separation layer and could contribute to high permeation performance.

Preparation of Membrane Zeolite MCM-22 and Evaluation Process Oil/Water Separation

2015 ◽  
Vol 820 ◽  
pp. 605-608
Author(s):  
A. Santos Barbosa ◽  
A.S. Barbosa ◽  
M.G.F. Rodrigues
Keyword(s):  
Continuous Flow ◽  
Membrane Separation ◽  
Secondary Growth ◽  
Evaluation Process ◽  
Zeolite Membrane ◽  
Water Separation ◽  
Oil Emulsion ◽  
X Ray ◽  
Growth Method ◽  
Oil Water

The objective of this work was prepared by secondary growth method, and evaluate the ability of the MCM-22 zeolite membrane separation system in oil / water in a continuous flow system. The zeolite membrane MCM-22 was characterized by different techniques: X-Ray Spectrometry Energy Dispersive (EDX), X-ray Diffraction (XRD) and Scanning Electron Microscopy (SEM). A continuous flow was used. The test for measuring mass flow of water / oil emulsion was conducted in peristaltic pump, wherein the membrane zeolite MCM-22 was tested. Through the results, we can observe the efficiency of the method used in the preparation of zeolite membrane and was also observed that the zeolite MCM-22 membrane, obtained by secondary growth method showed removal percentages equivalent to the standards required by Resolution 392 CONAMA.

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