Study of the competition between disproportionation and oxidation of cyclohexene in the liquid phase over solid catalysts

1994 ◽  
Vol 94 (2) ◽  
pp. 181-190 ◽  
Author(s):  
Z. Cvengrošová ◽  
M. Hronec
Keyword(s):  
Liquid Phase ◽  
Solid Catalysts

Catalysis in Alkylation of Benzene With Ethene and Propene to Produce Ethylbenzene and Isopropylbenzene

2020 ◽  
pp. 1-47
Author(s):  
Mohammed C. Al-Kinany ◽  
Saeed M. Alshihri ◽  
Saud A. Aldrees ◽  
Eyad A. Alghilan ◽  
Sami D. Aldrees ◽  
...  
Keyword(s):  
Liquid Phase ◽  
Gas Phase ◽  
Bronsted Acids ◽  
Solid Catalysts ◽  
Alkylation Of Benzene ◽  
History Of

The alkylation of benzene with ethylene or propylene to form ethylbenzene (EB) or cumene is an industrially significant transformation. EB is used as an intermediate in the manufacture of styrene, which in turn is an important in the manufacture of many kinds of polymers. The primary use of cumene is in the co-production of phenol and acetone, which in turn are important in the manufacture of many kinds of chemicals and polymers. In industry, EB and cumene are mainly manufactured by the alkylation of benzene with ethene or propene via two methods, the gas and the liquid phase in the presence of Lewis and Brønsted acids. The development of efficient solid catalysts has gained much attention over the last decades. The objective of this chapter is to provide an overview of the history of the alkylation of benzene with ethene and propene, the development of homogeneous and heterogeneous Lewis and Brønsted acids and zeiolite catalysts, the liquid and gas phase alkylation processes, and the industrial technologies for EB and cumene production.

scholarly journals Influence of the Method of Preparation of the Pd-Bi/Al2O3 Catalyst on Catalytic Properties in the Reaction of Liquid-Phase Oxidation of Glucose into Gluconic Acid

Catalysts ◽  
2020 ◽  
Vol 10 (3) ◽  
pp. 271 ◽  
Author(s):  
Mariya P. Sandu ◽  
Vladimir S. Sidelnikov ◽  
Andrej A. Geraskin ◽  
Aleksandr V. Chernyavskii ◽  
Irina A. Kurzina
Keyword(s):  
Liquid Phase ◽  
Gluconic Acid ◽  
Bimetallic Nanoparticles ◽  
Substrate Surface ◽  
Food Additives ◽  
Liquid Phase Oxidation ◽  
Solid Catalysts ◽  
Phase Oxidation ◽  
Work Samples ◽  
Oxidation Of Glucose

Gluconic acid and its derivatives are extensively used in pharmaceutical, food, textile, and pulp and paper branches of industry during production of food additives, cleansers, medicinal drugs, stabilizers, etc. To obtain gluconic acid, the method of conversion of glucose into gluconic acid by molecular oxygen in the presence of solid catalysts is promising. The process of obtaining Pd and bimetallic nanoparticles Pd-Bi, coated on Al2O3, has been considered in the work. Samples were prepared by combined and successive impregnation of the Al2O3 support using metalloorganic precursors Pd(acac)2, Bi(ac)3, and dissolved in an organic solvent (acetic acid), followed by the removal of excess solvent. To achieve the formation of Pd and bimetallic nanoparticles Pd-Bi on the substrate surface, the synthesized samples were subjected to thermal decomposition sequentially in the atmosphere of Ar, O2, and H2. The surface of the obtained catalysts was studied by a combination of physicochemical methods of analysis. The catalysts were analyzed in the reaction of liquid phase oxidation of glucose. The best results are achieved in the presence of the catalyst obtained by combined impregnation.

Competitive Catalytic Hydrogenation in the Liquid Phase on Solid Catalysts

1982 ◽  
Vol 24 (4) ◽  
pp. 503-566 ◽  
Author(s):  
Libor Červený ◽  
Vlastimil Růžička
Keyword(s):  
Liquid Phase ◽  
Catalytic Hydrogenation ◽  
Solid Catalysts

scholarly journals Metal organic frameworks as solid catalysts for liquid-phase continuous flow reactions

2020 ◽  
Vol 56 (1) ◽  
pp. 26-45 ◽  
Author(s):  
Amarajothi Dhakshinamoorthy ◽  
Sergio Navalon ◽  
Abdullah M. Asiri ◽  
Hermenegildo Garcia
Keyword(s):  
Liquid Phase ◽  
Continuous Flow ◽  
Metal Organic Frameworks ◽  
Flow Conditions ◽  
Feature Article ◽  
Solid Catalysts ◽  
Recent Developments ◽  
Metal Organic

This Feature Article describes the recent developments in the use of MOFs as catalysts under continuous flow conditions illustrating that these materials can meet the required stability.

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