Origin of the optimum in catalytic activity of zeolite beta

A hierarchically porous zeolite beta as a carrier was made by surfactant-assisted hydrothermal treatment and subsequent alkali etching, and the Cu/Mn species were co-loaded into the carrier. The obtained catalyst exhibits excellent catalytic activity and water-resistance for soot catalytic oxidation.

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Tuning supported Ni catalysts by varying zeolite Beta heteroatom composition: effects on ethylene adsorption and dimerization catalysis

Catalysis Science & Technology ◽

10.1039/d1cy00308a ◽

2021 ◽

Author(s):

Michael Meloni ◽

Ron Runnebaum

Keyword(s):

Catalytic Activity ◽

Electron Density ◽

Zeolite Beta ◽

Ni Catalysts ◽

Composition Effects ◽

Ethylene Adsorption ◽

Supported Ni Catalysts ◽

Supported Ni

The influence of zeolite heteroatom composition on the electron density and catalytic activity of a supported Ni cation is examined. Ni-[X]-Beta catalysts, where X = Al, Ga, Fe, or dealuminated,...

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Effect of the impregnation order on the nature of metal particles of bi-functional Pt/Pd-supported zeolite Beta materials and on their catalytic activity for the hydroisomerization of alkanes

Journal of Catalysis ◽

10.1016/j.jcat.2007.10.022 ◽

2008 ◽

Vol 254 (1) ◽

pp. 12-26 ◽

Cited By ~ 44

Author(s):

R ROLDAN ◽

A BEALE ◽

M SANCHEZSANCHEZ ◽

F ROMEROSALGUERO ◽

C JIMENEZSANCHIDRIAN ◽

...

Keyword(s):

Catalytic Activity ◽

Zeolite Beta ◽

Metal Particles

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Synthesis of nanocrystalline zeolite beta in supercritical fluids, characterization and catalytic activity

Journal of Molecular Catalysis A Chemical ◽

10.1016/j.molcata.2006.02.044 ◽

2006 ◽

Vol 252 (1-2) ◽

pp. 76-84 ◽

Cited By ~ 23

Author(s):

M. Lakshmi Kantam ◽

Bhavnari P.C. Rao ◽

B.M. Choudary ◽

K. Koteswara Rao ◽

Bojja Sreedhar ◽

...

Keyword(s):

Catalytic Activity ◽

Supercritical Fluids ◽

Zeolite Beta

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Pt/Fe co-loaded mesoporous zeolite beta for CO oxidation with high catalytic activity and water resistance

RSC Advances ◽

10.1039/c9ra04599f ◽

2019 ◽

Vol 9 (48) ◽

pp. 28089-28094 ◽

Cited By ~ 1

Author(s):

Qinru Li ◽

Xiaoxia Zhou ◽

Wanpeng Zhao ◽

Chunlei Peng ◽

Huixia Wu ◽

...

Keyword(s):

Catalytic Activity ◽

Ion Exchange ◽

Ethylene Glycol ◽

Co Oxidation ◽

Water Resistance ◽

Reduction Method ◽

Zeolite Beta ◽

High Catalytic Activity ◽

Mesoporous Zeolite ◽

Highly Dispersed

A series of Pt/Fe co-loaded mBeta catalysts with highly dispersed Pt species have been successfully prepared by an ion exchange and subsequent ethylene glycol reduction method, and show excellent catalytic activity and durability in CO oxidation.

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Cubic and Hexagonal Mesoporous Aluminosilicates Assembled from Secondary Building Units Characteristic of Zeolite Beta

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.781-784.194 ◽

2013 ◽

Vol 781-784 ◽

pp. 194-197 ◽

Cited By ~ 1

Author(s):

Wan Ping Guo ◽

Juan Liu ◽

Zhen Zhang ◽

Lin Yu

Keyword(s):

Catalytic Activity ◽

Mesoporous Materials ◽

Catalytic Cracking ◽

Zeolite Beta ◽

Mesoporous Aluminosilicates ◽

Cumene Cracking ◽

Secondary Building Units ◽

Cracking Reaction ◽

Catalytic Cracking Reaction ◽

Mcm 41

To improve the structure order and catalytic activity of mesoporous materials, cubic (SBU-MCM-48) and hexagonal (SBU-MCM-41) mesoporous aluminosilicates containing secondary building units characteristic of zeolite Beta have been prepared, and characterized by means of XRD, N2 adsorption, IR spectroscopy, catalytic cracking reaction compared with the corresponding MCM-41. We found that the introduction of secondary building units characteristic of zeolite Beta into the mesopore wall could be an effective route to improve the acidity of mesoporous materials. Moreover, cubic SBU-MCM-48 has been more active than hexagonal SBU-MCM-41 for cumene cracking reaction.

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High resolution electron microscopy of lanthanum phosphate crystals

Proceedings, annual meeting, Electron Microscopy Society of America ◽

10.1017/s0424820100108519 ◽

1978 ◽

Vol 36 (1) ◽

pp. 274-275

Author(s):

J. C. Wheatley ◽

J. M. Cowley

Keyword(s):

Electron Microscopy ◽

Catalytic Activity ◽

High Resolution ◽

Petroleum Industry ◽

High Resolution Electron Microscopy ◽

Lanthanum Phosphate ◽

Good Catalyst ◽

Resolution Electron ◽

Good Catalytic Activity ◽

Physical And Chemical

Rare-earth phosphates are of particular interest because of their catalytic properties associated with the hydrolysis of many aromatic chlorides in the petroleum industry. Lanthanum phosphates (LaPO4) which have been doped with small amounts of copper have shown increased catalytic activity (1). However the physical and chemical characteristics of the samples leading to good catalytic activity are not known.Many catalysts are amorphous and thus do not easily lend themselves to methods of investigation which would include electron microscopy. However, the LaPO4, crystals are quite suitable samples for high resolution techniques.The samples used were obtained from William L. Kehl of Gulf Research and Development Company. The electron microscopy was carried out on a JEOL JEM-100B which had been modified for high resolution microscopy (2). Standard high resolution techniques were employed. Three different sample types were observed: 669A-1-5-7 (poor catalyst), H-L-2 (good catalyst) and 27-011 (good catalyst).

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