Effect of zeolite ZSM-5 content on the methanol transport in the ZSM-5/alumina catalysts for methanol-to-olefin reaction

2017 ◽  
Vol 127 ◽  
pp. 35-44 ◽  
Author(s):  
Alexey A. Zhokh ◽  
Peter E. Strizhak
Keyword(s):  
Methanol To Olefin ◽  
Methanol Transport ◽  
Alumina Catalysts

Progress in the Research on Methanol-to-Olefin Technology

2011 ◽  
Vol 2 (3) ◽  
pp. 191-199
Author(s):  
Qian Wang ◽  
Zengxi Li ◽  
Lei Wang
Keyword(s):  
Methanol To Olefin

Positive Role of Synthesis Method and Hard Template on the Catalytic Performance of SAPO-34 in Methanol to Olefin Reaction.

2020 ◽  
Vol 23 ◽  
Author(s):  
Sajjad Rimaz ◽  
Reza Katal
Keyword(s):  
Particle Size ◽  
Synthesis Method ◽  
Catalytic Performance ◽  
Hard Template ◽  
Structure Directing Agent ◽  
Positive Role ◽  
Methanol To Olefin ◽  
Dg Method ◽  
Synthesis Procedure

: In the present study, SAPO-34 particles were synthesized using hydrothermal (HT) and dry gel (DG) conversion methods in the presence of diethyl amine (DEA) as an organic structure directing agent (SDA). Carbon nanotubes (CNT) were used as hard template in the synthesis procedure to introduce transport pores into the structures of the synthesized samples. The synthesized samples were characterized with different methods to reveal effects of synthesis method and using hard template on their structure and catalytic performance in methanol to olefin reaction (MTO). DG conversion method results in smaller particle size in comparison with hydrothermal method, resulting in enhancing catalytic performance. On the other side, using CNT in the synthesis procedure with DG method results in more reduction in particle size and formation of hierarchical structure which drastically improves catalytic performance.

The effect of composition of cobalt-molybdenum catalysts on their surface acidity and isomerisation activity

1980 ◽  
Vol 45 (3) ◽  
pp. 697-702 ◽  
Author(s):  
Vlastimil Vyskočil ◽  
Miroslav Zdražil
Keyword(s):  
Chromatographic Method ◽  
Surface Acidity ◽  
Parallel Reaction ◽  
Molybdenum Catalysts ◽  
The Difference ◽  
Kinetics Of ◽  
Alumina Catalysts

Kinetics of isomerisation of cyclohexene to methylcyclopentene proceeding as parallel reaction to hydrogenation of cyclohexene to cyclohexane on cobalt-molybdenum catalysts of different composition has been measured. The surface acidity of these catalysts was estimated from the difference in the adsorption of toluene and heptane which was measured by chromatographic method. In a series of catalysts containing molybdenum the acidity parallels isomerisation activity. Cobalt on alumina catalysts and alumina itself have greater acidity but exhibit lower isomerisation activity compared to the catalysts containing molybdenum.

ChemInform Abstract: RAMAN SPECTROSCOPIC STUDY OF COBALT-MOLYBDENUM Γ-ALUMINA CATALYSTS

1978 ◽  
Vol 9 (40) ◽  
Author(s):  
J. MEDEMA ◽  
C. VAN STAM ◽  
V. H. J. DE BEER ◽  
A. J. A. KONINGS ◽  
D. C. KONINGSBERGER
Keyword(s):  
Spectroscopic Study ◽  
Raman Spectroscopic ◽  
Raman Spectroscopic Study ◽  
Alumina Catalysts

Dimerization of Hexadecene with Acid Mesoporous Silica‐Alumina Catalysts

2021 ◽  
Author(s):  
Narendra Kumar ◽  
Marina Lindblad ◽  
Jaana Makkonen ◽  
Väinö Sippola ◽  
Heidi Österholm ◽  
...  
Keyword(s):  
Mesoporous Silica ◽  
Silica Alumina ◽  
Alumina Catalysts

ChemInform Abstract: Chemisorption of Nitric Oxide on Copper-Alumina Catalysts.

ChemInform ◽  
2010 ◽  
Vol 23 (21) ◽  
pp. no-no
Author(s):  
R. HIERL ◽  
H.-P. URBACH ◽  
H. KNOEZINGER
Keyword(s):  
Nitric Oxide ◽  
Alumina Catalysts

Efficiency of ethanol conversion induced by controlled modification of pore structure and acidic properties of alumina catalysts

2011 ◽  
Vol 398 (1-2) ◽  
pp. 59-65 ◽  
Author(s):  
Leandro Martins ◽  
Dilson Cardoso ◽  
Peter Hammer ◽  
Teresita Garetto ◽  
Sandra H. Pulcinelli ◽  
...  
Keyword(s):  
Pore Structure ◽  
Ethanol Conversion ◽  
Acidic Properties ◽  
Alumina Catalysts
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