Synthesis of hydrocarbon fuels via selective reforming of kerosene over various Ni/zeolite catalysts

Hydrocarbon fuels produced from methanol was investigated over HZSM-5 zeolite catalysts with different Si/Al ratio. About 40% of hydrocarbon yield can be obtained under the identical reaction condition over the catalysts. HZSM-5 catalyst with lower Si/Al ratio has slightly higher oil yield and less olefin content in gas products, which can be ascribed to the stronger acidity in the catalyst favorable for the conversion of intermediates to aromatics. In addition, a small amount of dimethyl ether (DME) was detected when using HZSM-5 zeolite catalyst with Si/Al ratio of 38, indicating that the intermediates from preliminary methanol reaction not sufficiently convert.

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Advances in ultramicrotomy for physical sciences applications

Proceedings, annual meeting, Electron Microscopy Society of America ◽

10.1017/s0424820100149386 ◽

1993 ◽

Vol 51 ◽

pp. 710-711

Author(s):

G. McMahon ◽

T. Malis

Keyword(s):

Particle Surface ◽

Zeolite Catalysts ◽

Physical Sciences ◽

Pull Out ◽

Large Particles ◽

Novel Applications ◽

Metal Wires ◽

Frequent Problem ◽

Specific Orientation ◽

Diamond Knife

As with all techniques which are relatively new and therefore underutilized, diamond knife sectioning in the physical sciences continues to see both developments of the technique and novel applications.Technique Developments Development of specific orientation/embedding procedures for small pieces of awkward shape is exemplified by the work of Bradley et al on large, rather fragile particles of nuclear waste glass. At the same time, the frequent problem of pullout with large particles can be reduced by roughening of the particle surface, and a proven methodology using a commercial coupling agent developed for glasses has been utilized with good results on large zeolite catalysts. The same principle (using acid etches) should work for ceramic fibres or metal wires which may only partially pull out but result in unacceptably thick sections. Researchers from the life sciences continue to develop aspects of embedding media which may be applicable to certain cases in the physical sciences.

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New Wideband Models of Radiation from Combustion Products of Hydrocarbon Fuels

Heat Transfer Research ◽

10.1615/heattransres.v35.i12.40 ◽

2004 ◽

Vol 35 (1-2) ◽

pp. 26-33 ◽

Cited By ~ 3

Author(s):

S. T. Surzhikov

Keyword(s):

Combustion Products ◽

Hydrocarbon Fuels

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A BRIGHTNESS PYROMETER TECHNIQUE FOR TEMPERATURE MEASUREMENTS IN THE FLAMES OF HYDROCARBON FUELS

Proceedings of the First International Symposium on Radiation Transfer ◽

10.1615/ichmt.1995.radtransfproc.450 ◽

1995 ◽

Cited By ~ 1

Author(s):

V. I. Vladimirov ◽

Yu. A. Gorshkov ◽

V. S. Dozhdikov ◽

V. N. Senchenko

Keyword(s):

Hydrocarbon Fuels ◽

Temperature Measurements ◽

Brightness Pyrometer

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Performance of Ag-HZSM-5 Zeolite Catalysts in n-heptane Conversion

Revista de Chimie ◽

10.37358/rc.17.1.5401 ◽

2017 ◽

Vol 68 (1) ◽

pp. 116-120

Author(s):

Iuliean Vasile Asaftei ◽

Neculai Catalin Lungu ◽

Lucian Mihail Birsa ◽

Ioan Gabriel Sandu ◽

Laura Gabriela Sarbu ◽

...

Keyword(s):

Aromatic Hydrocarbons ◽

Metal Content ◽

Pulse Method ◽

Acid Strength ◽

Strength Distribution ◽

Zeolite Catalysts ◽

Benzene Toluene ◽

Acid Strength Distribution ◽

Silver Cations ◽

Heptane Conversion

The conversion of n-heptanes into aromatic hydrocarbons benzene, toluene and xylenes (BTX), by the chromatographic pulse method in the temperature range of 673 - 823K was performed over the HZSM-5 and Ag-HZSM-5 zeolites modified by ion exchange with AgNO3 aqueous solutions. The catalysts, HZSM-5 (SiO2/Al2O3 = 33.9), and Ag-HZSM-5 (Ag1-HZSM-5 wt. % Ag1.02, Ag2-HZSM-5 wt. % Ag 1.62; and Ag3-HZSM-5 wt. % Ag 2.05 having different acid strength distribution exhibit a conversion and a yield of aromatics depending on temperature and metal content. The yield of aromatic hydrocarbons BTX appreciably increased by incorporating silver cations Ag+ into HZSM-5.

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