Chlorinated alumina. Acidic properties and catalytic activity towards n-butane isomerization

1986 ◽  
Vol 82 (6) ◽  
pp. 1893 ◽  
Author(s):  
Antonio Melchor ◽  
Edouard Garbowski ◽  
Michel-Vital Mathieu ◽  
Michel Primet
Keyword(s):  
Catalytic Activity ◽  
Acidic Properties ◽  
Butane Isomerization

Iron and manganese promoted sulfated zirconia: acidic properties and n-butane isomerization activity

2005 ◽  
Vol 100 (3-4) ◽  
pp. 397-401 ◽  
Author(s):  
T. Løften ◽  
N.S. Gnep ◽  
M. Guisnet ◽  
E.A. Blekkan
Keyword(s):  
Sulfated Zirconia ◽  
Acidic Properties ◽  
Butane Isomerization ◽  
Iron And Manganese

Acid Properties of MCM-36 Molecular Sieve and its Catalytic Behavior in Benzene Alkylation with Propylene

2014 ◽  
Vol 1015 ◽  
pp. 434-437 ◽  
Author(s):  
Fei Zhao ◽  
Yu Zhang ◽  
Wen Jing Jiang
Keyword(s):  
Catalytic Activity ◽  
Molecular Sieve ◽  
Acid Sites ◽  
Velocity Space ◽  
Acidic Properties ◽  
Catalytic Behavior ◽  
Benzene Alkylation ◽  
Acid Properties ◽  
Ft Ir ◽  
Excellent Selectivity

Pillared layered MCM-36 zeolite was synthesized from pure MCM-22 precursor with polymeric silica as pillaring agent. Characterization results of acidic properties from FT-IR indicate a decrease in the amounts of Lewis acidic and Brønsted acidic. The catalytic behavior of pillared layered MCM-36 zeolite in benzene alkylation with propylene was studied. It was found that pillared MCM-36 zeolite shows stable catalytic activity in a 200h time-on-stream measurement under a relatively high propylene velocity space. The excellent selectivity to cumene over MCM-36 should be mainly due to the decrease in the amount of Brønsted acidity, while the improvement of the catalytic activity of MCM-36 can be mainly assigned to the presence of a larger amount of structurally accessible acid sites caused by the increment of mesoporous volume in this material.

Tetragonal structure, anionic vacancies and catalytic activity of SO42−-ZrO2 catalysts for n-butane isomerization

2002 ◽  
Vol 230 (1-2) ◽  
pp. 137-151 ◽  
Author(s):  
Carlos R. Vera ◽  
Carlos L. Pieck ◽  
Kiyoyuki Shimizu ◽  
José M. Parera
Keyword(s):  
Catalytic Activity ◽  
Tetragonal Structure ◽  
Butane Isomerization

Improved synthesis and study of acidic properties of ‘plugs’-containing Al-SBA-15 materials

2010 ◽  
Vol 76 (1) ◽  
pp. 39-49 ◽  
Author(s):  
ZhiQi Jia ◽  
YongXiang Zhao
Keyword(s):  
Catalytic Activity ◽  
Pore Wall ◽  
Point Of View ◽  
Polymerization Reaction ◽  
Acidic Properties ◽  
Acidic Sites ◽  
Pore Wall Thickness ◽  
Aluminum Precursor ◽  
Large Pore Size ◽  
Mcm 41

A novel ‘plugs’-containing Al-SBA-15 material (denoted as PAS) was directly synthesized through simultaneous introducing toluene and aluminum precursor into the reaction mixture of traditional SBA-15. Such material not only featured a unique two-step desorption isotherm as conventional plugged SBA-15 synthesized using excessive siliceous precursor, and higher pore wall thickness than that of other analogous materials, but also possessed weak and medium acidic sites, which implied the PAS would offer unusual advantages such as multifunctionality to process a large variety of feed-stocks in acid-involved reaction (e.g. polymerization of tetrahydrofuran) in industrial point of view. In addition, catalytic activity of the PAS was investigated by the tetrahydrofuran (THF) polymerization reaction in the presence of acetic anhydride and compared with Al-doped MCM-41 prepared via conventional direct hydrothermal synthesis. The PAS exhibited good performance on polymerization of THF. Such result could be related to the large pore size and moderate acidic sites.

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