Designing SAPO-18 with Energetically Favorable Tetrahedral Si Ions for MTO Reaction

2021 ◽  
Author(s):  
Peng Wu ◽  
Meiting Wen ◽  
Li Ren ◽  
Jingyan Zhang ◽  
Jin-gang Jiang ◽  
...  
Keyword(s):  
Catalytic Properties ◽  
Site Location ◽  
Mto Reaction

The silicon site location in silicoaluminophosphate zeolites have significant influences on their acidic and catalytic properties. Herein, AEI analogue silicoaluminophosphates with controlled tetrahedral silicon centers (T sites) were synthesized using...

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.

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.

In Situ Synthesis of SAPO-34 Grown onto Fully Calcined Kaolin Microspheres and Its Catalytic Properties for the MTO Reaction

2011 ◽  
Vol 50 (17) ◽  
pp. 9989-9997 ◽  
Author(s):  
Pengfei Wang ◽  
Ailing Lv ◽  
Jie Hu ◽  
Jing’an Xu ◽  
Guanzhong Lu
Keyword(s):  
Catalytic Properties ◽  
In Situ Synthesis ◽  
Mto Reaction ◽  
Calcined Kaolin

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®.

Control of acid-site location of ZSM-5 zeolite membrane and its application to the MTO reaction

2005 ◽  
Vol 105 (3-4) ◽  
pp. 662-666 ◽  
Author(s):  
Teruoki Tago ◽  
Kazuyuki Iwakai ◽  
Ken Morita ◽  
Katsunori Tanaka ◽  
Takao Masuda
Keyword(s):  
Acid Site ◽  
Zeolite Membrane ◽  
Site Location ◽  
Mto Reaction

Development of AEI type germanoaluminophosphate (GeAPO-18) with ultra-weak acid sites and its catalytic properties for the methanol to olefin (MTO) reaction

2017 ◽  
Vol 7 (20) ◽  
pp. 4622-4628 ◽  
Author(s):  
Kaito Ono ◽  
Koji Miyake ◽  
Masahiro Nakai ◽  
Hasna Al Jabri ◽  
Yuichiro Hirota ◽  
...  
Keyword(s):  
Catalytic Properties ◽  
Acid Sites ◽  
Weak Acid ◽  
Bronsted Acid ◽  
Brønsted Acid ◽  
Brønsted Acid Sites ◽  
Mto Reaction ◽  
Brönsted Acid ◽  
Methanol To Olefin ◽  
Brönsted Acid Sites

Incorporating Ge into the aluminophosphate framework generated weakened Brønsted acid sites, leading to prolonged catalyst lifetimes in the MTO reaction.

Microstructure and reactivity of small metal particles: The role of Ce additives

1992 ◽  
Vol 50 (1) ◽  
pp. 318-319
Author(s):  
L.D. Schmidt ◽  
K. R. Krause ◽  
J. M. Schwartz ◽  
X. Chu
Keyword(s):  
Atmospheric Pressure ◽  
Noble Metals ◽  
Mixed Oxides ◽  
Catalytic Properties ◽  
Chemical Shifts ◽  
Catalytic Converter ◽  
Structural Evolution ◽  
Single Particles ◽  
Small Metal Particles

The evolution of microstructures of 10- to 100-Å diameter particles of Rh and Pt on SiO2 and Al2O3 following treatment in reducing, oxidizing, and reacting conditions have been characterized by TEM. We are able to transfer particles repeatedly between microscope and a reactor furnace so that the structural evolution of single particles can be examined following treatments in gases at atmospheric pressure. We are especially interested in the role of Ce additives on noble metals such as Pt and Rh. These systems are crucial in the automotive catalytic converter, and rare earths can significantly modify catalytic properties in many reactions. In particular, we are concerned with the oxidation state of Ce and its role in formation of mixed oxides with metals or with the support. For this we employ EELS in TEM, a technique uniquely suited to detect chemical shifts with ∼30Å resolution.

Electron distribution change of small nickel particles encaged in X zeolite in presence of Ce3+ ions, related to their catalytic properties

1986 ◽  
Vol 83 ◽  
pp. 619-621 ◽  
Author(s):  
F. Vergand ◽  
B. Iraqi ◽  
C. Bonnelle ◽  
E. Ramaroson ◽  
M.F. Guilleux ◽  
...  
Keyword(s):  
Electron Distribution ◽  
Catalytic Properties ◽  
Distribution Change ◽  
Nickel Particles ◽  
X Zeolite
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