Bimetallic V and Ti incorporated MCM-41 molecular sieves and their catalytic properties

RSC Advances ◽  
2015 ◽  
Vol 5 (21) ◽  
pp. 16598-16603 ◽  
Author(s):  
Baoshan Li ◽  
Naijin Wu ◽  
Kai Wu ◽  
Jianjun Liu ◽  
Chunying Han ◽  
...  
Keyword(s):  
Molecular Sieves ◽  
Catalytic Properties ◽  
Catalytic Performance ◽  
Tetrahedral Coordination ◽  
Excellent Catalytic Performance ◽  
Mcm 41

V and Ti atoms incorporated into the framework of MCM-41 in the form of tetrahedral coordination with excellent catalytic performance.

PtPd nanoframes derived from Pd@PdPt core–shell rhombic dodecahedrals with excellent catalytic performance toward methanol oxidation

2021 ◽  
Author(s):  
Yangyang Ren ◽  
Chuanliang Li ◽  
Baosong Li ◽  
Fan Gao ◽  
Xinghua Zhang ◽  
...  
Keyword(s):  
Methanol Oxidation ◽  
Catalytic Properties ◽  
Catalytic Performance ◽  
Core Shell ◽  
Acid Environment ◽  
Excellent Catalytic Performance

PtPd nanoframes with excellent catalytic properties were obtained by etching Pd@PdPt core–shell RDs with Fe3+ in an acid environment.

ChemInform Abstract: Physicochemical and Catalytic Properties of MCM-41 Mesoporous Molecular Sieves Containing Transition Metals (Cu, Ni, and Nb)

ChemInform ◽  
2000 ◽  
Vol 31 (41) ◽  
pp. no-no
Author(s):  
M. Ziolek ◽  
I. Nowak ◽  
I. Sobczak ◽  
A. Lewandowska ◽  
P. Decyk ◽  
...  
Keyword(s):  
Transition Metals ◽  
Molecular Sieves ◽  
Catalytic Properties ◽  
Mesoporous Molecular Sieves ◽  
Mcm 41

Ga and Al containing MCM-41 mesoporous molecular sieves: Structure and catalytic performance for the 4,6 dimethyldibenzothiophene hydrodesulfurization

2013 ◽  
Vol 212 ◽  
pp. 45-51 ◽  
Author(s):  
E. Martínez-Belmonte ◽  
J. Aguilar ◽  
M. Gutierrez ◽  
J.A. Montoya ◽  
J.A. De los Reyes ◽  
...  
Keyword(s):  
Molecular Sieves ◽  
Catalytic Performance ◽  
Mesoporous Molecular Sieves ◽  
Mcm 41

Oxidative desulfurization catalyzed by a novel ZrP/MCM-41 catalyst with high performance

2020 ◽  
Vol 4 (8) ◽  
pp. 4293-4300
Author(s):  
Panpan Zhang ◽  
Lihua Kang ◽  
Mingyuan Zhu ◽  
Bin Dai
Keyword(s):  
High Performance ◽  
Oxidative Desulfurization ◽  
Catalytic Performance ◽  
Excellent Catalytic Performance ◽  
Mcm 41

The excellent catalytic performance of the ZrP/MCM-41 catalyst in oxidative desulfurization was attributed to the Zr–OH sites.

Synthesis of Al-Containing Mesoporous Molecular Sieves and their Catalytic Performance to Isomerization Reaction of Endo-Tetrahydrodicyclo-Pentadiene

2011 ◽  
Vol 233-235 ◽  
pp. 234-237 ◽  
Author(s):  
Sa Liu ◽  
Jian Wei Guo ◽  
Chu Fen Yang ◽  
Long Huan Li ◽  
Yi Hua Cui
Keyword(s):  
Catalytic Activity ◽  
Molecular Sieves ◽  
Catalytic Performance ◽  
Mesoporous Molecular Sieves ◽  
Isomerization Reaction ◽  
Inorganic Acid ◽  
Ft Ir ◽  
Desorption Isotherms ◽  
Adsorption Desorption ◽  
Mcm 41

Al-containing mesoporous molecular sieves(Al-MCM-41) were synthesized at ambient temperature. The structures of samples were characterized by XRD, N2-adsorption/desorption isotherms and FT-IR, etc. The evaluation results showed that Al-MCM-41 had higher catalytic activity for isomerization conversion of endo-tetrahydrodicyclo-pentadiene (endo-TCD) into exo-tetrahydrodicyclo-pentadiene (exo-TCD) and adamantane (AdH). Loading inorganic acid on the surface of Al-MCM-41 led increase of its catalytic activity and the yield of adamantane.

Synthesis and Catalytic Application of Mesoporous Molecular Sieves MCM-41 Containing Niobium and Tantalum

2007 ◽  
Vol 124-126 ◽  
pp. 1761-1764 ◽  
Author(s):  
Hun Jung ◽  
Kwang Deog Jung ◽  
Oh Shim Joo ◽  
Sun Jin Kim
Keyword(s):  
Vapor Phase ◽  
Molecular Sieves ◽  
Catalytic Performance ◽  
Acid Sites ◽  
Weak Acid ◽  
Beckmann Rearrangement ◽  
Mesoporous Molecular Sieves ◽  
Cyclohexanone Oxime ◽  
Catalytic Application ◽  
Mcm 41

Niobium- and tantalum-containing mesoporous molecular sieves MCM-41 have been synthesized, and applied as a catalyst for vapor phase Beckmann rearrangement of cyclohexanone oxime to ε-caprolactam. NbMCM-41 catalyst exhibited high catalytic performance in the vapor phase Beckmann rearrangement of cyclohexanone oxime. The oxime conversions were almost 100% and the lactam selectivities were around 80%. The lactam selectivities of NbMCM-41 catalyst were higher than those of AlMCM-41 catalyst. However, TaMCM-41 catalyst exhibited lower catalytic performance than AlMCM-41 catalyst, and it was fast deactivated with time. These results may be due to the acidity difference among the catalysts. The results from NH3-TPD showed that NbMCM-41 catalyst possessed weak and medium acid sites, while TaMCM-41 catalyst possessed only very weak acid sites. AlMCM-41 catalyst also exhibited only weak acid sites.

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