Anhydrous copper(II) sulfate: an efficient catalyst for the liquid-phase dehydration of alcohols

1980 ◽  
Vol 45 (5) ◽  
pp. 917-919 ◽  
Author(s):  
Robert V. Hoffman ◽  
Richard D. Bishop ◽  
Patricia M. Fitch ◽  
Richard Hardenstein
Keyword(s):  
Liquid Phase ◽  
Efficient Catalyst

Correction. Anhydrous Copper(II)Sulfate: An Efficient Catalyst for the Liquid-Phase Dehydration of Alcohols

1981 ◽  
Vol 46 (26) ◽  
pp. 5458-5458
Author(s):  
Robert Hoffman ◽  
Richard Bishop ◽  
Patricia Fitch ◽  
Richard Hardenstein
Keyword(s):  
Liquid Phase ◽  
Efficient Catalyst

ChemInform Abstract: ANHYDROUS COPPER(II) SULFATE: AN EFFICIENT CATALYST FOR THE LIQUID-PHASE DEHYDRATION OF ALCOHOLS

1980 ◽  
Vol 11 (28) ◽  
Author(s):  
R. V. HOFFMAN ◽  
R. D. BISHOP ◽  
P. M. FITCH ◽  
R. HARDENSTEIN
Keyword(s):  
Liquid Phase ◽  
Efficient Catalyst

Aerobic liquid-phase oxidation of p-xylene over metalloporphyrins

2007 ◽  
Vol 11 (07) ◽  
pp. 524-530 ◽  
Author(s):  
Quan Jiang ◽  
Hai-Yang Hu ◽  
Can-Cheng Guo ◽  
Qiang Liu ◽  
Jian-Xin Song ◽  
...  
Keyword(s):  
Liquid Phase ◽  
Terephthalic Acid ◽  
Oxidation Process ◽  
Product Distribution ◽  
Oxidation Products ◽  
Reaction Parameters ◽  
Efficient Catalyst ◽  
Product Distributions ◽  
Phase Oxidation ◽  
Intermediate Oxidation

The five metalloporphyrins ( T (p- Cl ) PPM , M = Fe , Mn , Co , Cu , Zn ) with different metal nuclei were synthesized, and their catalytic aerobic liquid-phase oxidations of p-xylene into p-toluic acid, p-toluic aldehyde and terephthalic acid using a low concentration of acetic acid as solvent without any halide additives, were studied. The p-xylene conversions and the oxidation product distributions were found to be affected by the structures and concentration of the metalloporphyrins as well as the reaction parameters such as time, temperature and air pressure. The formation of some intermediate oxidation products in the oxidation process also influenced the reaction conversions and the product distribution. Among the metalloporphyrins used, tetrakis(p-chlorophenylporphinato)manganese chloride ( T (p- Cl ) PPMnCl ) was the most efficient catalyst for the oxidation of p-xylene. Under the conditions of 180 °C and 2.0 MPa, 44% conversion of p-xylene and 85% selectivity of p-toluic acid were obtained. Based on the results obtained, a preliminary mechanism of the oxidation of p-xylene over metalloporphyrins was proposed.

Highly Efficient Nano-Catalysts Using Activated Carbon as a Support for One-Step Oxidation of Cyclohexane to Adipic Acid

2013 ◽  
Vol 562-565 ◽  
pp. 754-759 ◽  
Author(s):  
Huan Dai ◽  
Ming Qiao Zhu ◽  
Wei Li ◽  
Zhang Fa Tong
Keyword(s):  
Activated Carbon ◽  
Liquid Phase ◽  
Adipic Acid ◽  
Potential Application ◽  
Step Method ◽  
Efficient Catalyst ◽  
Highly Efficient ◽  
Phase Oxidation ◽  
One Step ◽  
Nano Catalysts

A new route to substitute for the traditional two-step method for adipic acid production has been investigated. Supported nano metal catalysts Au/C and Co/C were prepared and used for liquid phase oxidation of cyclohexane to adipic acid with oxygen as an oxidant. These catalysts were characterized by XRD, TEM and ICP-AES. The reactions were carried out in an autoclave with solvent and radical initiator at 373~423K and 1.5 MPa. Au/C (1.25%) was found to be a highly efficient catalyst for the oxidation of cyclohexane with a high conversion (44.93%) of cyclohexane and more than 54.85% selectivity to adipic acid. It is indicated that there was a potential application prospect for the nano-catalysts in one-step oxidation of cyclohexane to adipic acid.

Formaldehyde–isobutene Prins condensation over MFI-type zeolites

2018 ◽  
Vol 8 (22) ◽  
pp. 5794-5806 ◽  
Author(s):  
Efterpi S. Vasiliadou ◽  
Sha Li ◽  
Stavros Caratzoulas ◽  
Raul F. Lobo
Keyword(s):  
Liquid Phase ◽  
Efficient Catalyst

H-ZSM-5 was identified as the most efficient catalyst for the liquid phase Prins condensation of formaldehyde with isobutene to 3-methyl-3-buten-1-ol and subsequently isoprene.

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