Structured Catalysts on Metal Supports for Light Alkane Conversion

2015 ◽  
pp. 293-314
Author(s):  
Leonid Kustov
Keyword(s):  
Light Alkane ◽  
Structured Catalysts ◽  
Metal Supports ◽  
Alkane Conversion

An Explanation for the Enhanced Activity for Light Alkane Conversion in Mildly Steam Dealuminated Mordenite: The Dominant Role of Adsorption

2001 ◽  
Vol 202 (1) ◽  
pp. 129-140 ◽  
Author(s):  
J.A van Bokhoven ◽  
M Tromp ◽  
D.C Koningsberger ◽  
J.T Miller ◽  
J.A.Z Pieterse ◽  
...  
Keyword(s):  
Dominant Role ◽  
Light Alkane ◽  
Enhanced Activity ◽  
Alkane Conversion

Ceramic monolith- and foam-structured catalysts via in-situ combustion deposition for energetic applications

2018 ◽  
Vol 42 (3) ◽  
pp. 405-418
Author(s):  
Cristina ITALIANO ◽  
Lidia PINO ◽  
Massimo LAGANÀ ◽  
Antonio VITA
Keyword(s):  
In Situ Combustion ◽  
Structured Catalysts

The External Morphology of the Eggs of Culex (Culex) saltanensis (Diptera: Culicidae) Under Scanning Electron Microscopy

2020 ◽  
Author(s):  
J R Santos-Mallet ◽  
T D Balthazar ◽  
A A Oliveira ◽  
W A Marques ◽  
A Q Bastos ◽  
...  
Keyword(s):  
Electron Microscopy ◽  
Scanning Electron Microscopy ◽  
Electron Microscope ◽  
Scanning Electron Microscope ◽  
Optical Microscopy ◽  
Osmium Tetroxide ◽  
Neotropical Region ◽  
External Morphology ◽  
Metal Supports ◽  
Scanning Electron

Abstract The aim of the present study was to describe the morphology of the eggs of Culex (Culex) saltanensis Dyar that occurs in the Neotropical region. Eggs of the Cx. (Cux.) saltanensis were collected at the Mata Atlântica FIOCRUZ campus, fixed in 1% osmium tetroxide, prepared for mounting on metal supports, observed under a scanning electron microscope, and described morphologically. The eggs had a coniform shape with a length of approximately 0.5 mm (505–510 µm) and a width in the median portion of 117 µm (113–123 µm). Upper portion is lined with tubers of irregular shape and varying sizes (0.64–1.31 µm), located on a cross-linked matrix forming bands observed under optical microscopy. The micropyle is encased in a necklace of approximately 6.6-µm plates arranged in a flower-like shape. Comparing Cx. (Cux.) saltanensis eggs with several species of different genera, important divergent characteristics can be observed. However, this study points to the need for new descriptions of eggs of species belonging to the same subgenus in order to analyze if there will be differences between them. Culex (Cux.) saltanensis eggs have particular characteristics not observed in eggs of other Culicidae genera.

Dehydrogenation of light alkanes to mono-olefins

2021 ◽  
Vol 50 (7) ◽  
pp. 4359-4381
Author(s):  
Chunyi Li ◽  
Guowei Wang
Keyword(s):  
Recent Progress ◽  
Light Alkanes ◽  
Alkane Dehydrogenation ◽  
Light Alkane ◽  
New Directions

This review summarizes recent progress in the catalysts and reactors for light alkane dehydrogenation, providing new directions for dehydrogenation technologies.

Influence of Impregnation-Vacuum Filtration Conditions on Ni Dispersion and Activity of Ni-Cordierite for Hydrogenation

2013 ◽  
Vol 781-784 ◽  
pp. 312-319
Author(s):  
Shao Wen Liu ◽  
Zhuo Long Guan ◽  
Lei Qing ◽  
Jiu Ling Chen ◽  
Hai Nan Wang ◽  
...  
Keyword(s):  
Solution Concentration ◽  
Catalytic Performance ◽  
Filtration Time ◽  
Filtration Method ◽  
Vacuum Filtration ◽  
Structured Catalysts ◽  
Preparation Conditions ◽  
Vacuum Degree ◽  
Close Relationship ◽  
Impregnation Time

The influence of the preparation conditions of the impregnation-vacuum filtration method was investigated systematically on the Ni dispersion and the activity of Ni-cordierite structured catalysts in hydrogenation of m-dinitrobenzene to m-phenylenediamine. H2-TPD measurement showed that the Ni dispersion has close relationship with the impregnation solution concentration of nickel nitrate, the impregnation time, the vacuum degree, the vacuum filtration time and the calcination temperature. The hydrogenation activity test and nitrogen physisorption investigation showed that the catalytic performance of Ni-cordierite is dependent upon the Ni dispersion and the chemisorption mode of m-dinitrobenzene on Ni particles.

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