A non-nitric acid method of adipic acid synthesis: organic solvent- and promoter-free oxidation of cyclohexanone with oxygen over hollow-structured Mn/TS-1 catalysts

2015 ◽  
Vol 17 (3) ◽  
pp. 1884-1892 ◽  
Author(s):  
Guoqiang Zou ◽  
Wenzhou Zhong ◽  
Liqiu Mao ◽  
Qiong Xu ◽  
Jiafu Xiao ◽  
...  
Keyword(s):  
Nitric Acid ◽  
Organic Solvent ◽  
Adipic Acid ◽  
Acid Production ◽  
Acid Synthesis ◽  
Oxidative Cleavage ◽  
Acid Method ◽  
Free Oxidation

A novel hollow-structured Mn/TS-1 catalyst has been reported as a non-nitric acid route for adipic acid production from oxidative cleavage of cyclohexanone.

Comparison of the Bromine and Nitric Acid Methods of Estimating Sulfur in Acetone Extracts

1947 ◽  
Vol 20 (1) ◽  
pp. 315-319 ◽  
Author(s):  
J. F. Morley ◽  
J. R. Scott
Keyword(s):  
Nitric Acid ◽  
Sulfur Content ◽  
Elementary Sulfur ◽  
Total Sulfur ◽  
Total Sulfur Content ◽  
Acid Method ◽  
The Difference ◽  
The One ◽  
Acetone Extracts ◽  
Free Sulfur

Abstract From the experiments described, it appears that neither the bromine method nor the nitric acid method is perfectly satisfactory, for the following reasons. (1) Neither method gives the true free sulfur in rubbers containing sulfur-bearing accelerators, as these cause positive errors of anything up to 0.2–0.3 per cent. (2) The nitric acid method does not give the true free sulfur in rubbers, without sulfur-bearing accelerators, because the result includes some of the sulfur combined with the rubber “resins” the tests do not show definitely whether this applies also to the bromine method. (3) Neither method gives the total sulfur in the acetone extract, since some of the sulfur combined with the “resins” is not included in the result; the presence of certain sulfur-bearing accelerators increases the error. The statement previously referred to (loc. cit.), that the bromine method approximates more nearly to the elementary sulfur content and the nitric acid method more nearly to the total sulfur content of the extract, appears to be a correct generalization. In most cases, however, the difference between the results obtained by the two methods would be less than 0.1 per cent. In respect of simplicity and rapidity of working, the bromine method has the advantage over the nitric acid method, and therefore in all ordinary circumstances is the one to be recommended.

Influence of reactional parameters in the adipic acid synthesis from cyclohexene using heterogeneous polyoxometalates

2020 ◽  
Author(s):  
João Carlos S. Soares ◽  
Arthur Henrique A. Gonçalves ◽  
Fátima M.Z. Zotin ◽  
Lucia R. Raddi de Araújo ◽  
Alexandre B. Gaspar
Keyword(s):  
Adipic Acid ◽  
Acid Synthesis

scholarly journals FeOx/Al2O3 catalysts for high-temperature decomposition of N2O under conditions of NH3 oxidation in nitric acid production

2018 ◽  
Vol 8 (11) ◽  
pp. 2841-2852 ◽  
Author(s):  
Galina Sádovská ◽  
Edyta Tabor ◽  
Milan Bernauer ◽  
Petr Sazama ◽  
Vlastimil Fíla ◽  
...  
Keyword(s):  
High Temperature ◽  
Nitric Acid ◽  
Acid Production ◽  
Active Species ◽  
Gas Mixture ◽  
Temperature Decomposition ◽  
Nh3 Oxidation ◽  
Oxidation Of Ammonia

The δ and θ Al2O3 phases well stabilized Fe(iii) in Td or Oh coordination, which were identified as the active species in high temperature decomposition of N2O in a complex gas mixture produced by oxidation of ammonia.

Cobalt-Vanadyl mixed polyoxometallates as new catalysts for green adipic acid production

2021 ◽  
Author(s):  
Sihem Mouanni ◽  
Dahbia Amitouche ◽  
Tassadit Mazari ◽  
Abdenour Boumechhour ◽  
Cherifa Rabia
Keyword(s):  
Adipic Acid ◽  
Acid Production

scholarly journals Bio Adipic Acid Production from Sodium Muconate and Muconic Acid: A Comparison of two Systems

ChemCatChem ◽  
2019 ◽  
Vol 11 (13) ◽  
pp. 3075-3084 ◽  
Author(s):  
Sofia Capelli ◽  
Davide Motta ◽  
Claudio Evangelisti ◽  
Nikolaos Dimitratos ◽  
Laura Prati ◽  
...  
Keyword(s):  
Adipic Acid ◽  
Acid Production ◽  
Muconic Acid ◽  
Two Systems

Removal of Nitrous Oxide in Nitric Acid Production

2019 ◽  
Vol 60 (6) ◽  
pp. 744-760 ◽  
Author(s):  
L. A. Isupova ◽  
Yu. A. Ivanova
Keyword(s):  
Nitrous Oxide ◽  
Nitric Acid ◽  
Acid Production

scholarly journals Organic Salts and Merrifield Resin Supported [PM12O40]3− (M = Mo or W) as Catalysts for Adipic Acid Synthesis

Molecules ◽  
2019 ◽  
Vol 24 (4) ◽  
pp. 783 ◽  
Author(s):  
Jana Pisk ◽  
Dominique Agustin ◽  
Rinaldo Poli
Keyword(s):  
Adipic Acid ◽  
Acid Synthesis ◽  
Catalyst Loading ◽  
Aqueous Hydrogen Peroxide ◽  
Organic Salts ◽  
Solvent Free Conditions ◽  
Molecular Salts ◽  
Merrifield Resin ◽  
Low Catalyst Loading ◽  
Catalyzed Oxidation

Adipic acid (AA) was obtained by catalyzed oxidation of cyclohexene, epoxycyclohexane, or cyclohexanediol under organic solvent-free conditions using aqueous hydrogen peroxide (30%) as an oxidizing agent and molybdenum- or tungsten-based Keggin polyoxometalates (POMs) surrounded by organic cations or ionically supported on functionalized Merrifield resins. Operating under these environmentally friendly, greener conditions and with low catalyst loading (0.025% for the molecular salts and 0.001–0.007% for the supported POMs), AA could be produced in interesting yields.

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