Adipic acid formation from cyclohexanediol using platinum and vanadium catalysts: elucidating the role of homogeneous vanadium species

Abstract

<p>The applicability of platinum and vanadium catalysts for the production of adipic acid from cyclohexanediol is severely limited by the instability of the latter species in liquid phase reactions.</p>

Reductive Conversion of Biomass-Derived Furancarboxylic Acids with Retention of Carboxylic Acid Moiety

“…Because of the enormous use of petroleum, hydrogen and nitric acid in the current process, the production of adipic acid from biomass has been intensively investigated in these days. Other production methods of adipic acid from biomass include (i) conversion of hydrocarbons produced by BTL (biomass to liquid; combination of biomass gasification and Fischer-Tropsch synthesis) [77] in petrochemical processes, (ii) production of K-A oil by reduction of biomass pyrolysis oil (bio-oil) [78][79][80][81][82][83], (iii) direct production of adipic acid by fermentation [84], (iv) hydrodeoxygenation of sugar acids produced by oxidation of sugars [85][86][87][88][89][90][91][92], (v) extension of carbon chain of C5 biomass-derived platform chemicals such as γ-valerolactone by hydroformylation or carboxylation [93][94][95][96], and (vi) oxidative cleavage of 1,2-difunctionalized cyclohexanes produced by reduction of bio-oil [97][98][99][100]. Low yield from raw biomass (methods (i), (ii), (iii) and (vi)) and large number of steps (methods (i), (ii), (9) (v) and (vi)) are the main problems of these methods.…”

Supported Vanadium Oxide as a Photocatalyst in the Liquid Phase: Dissolution Studies and Selective Laser Excitation

“…Even as little as 7.6 ppm of this species in solution was able to carry out the selective oxidation of 2-hydroxycyclo-hexanone to adipic acid at 80 °C and 3 bar O 2 . [5] In a similar manner, VO 2 + ions leached from a polyoxometalate cluster anion H 5 [PV 2 Mo 10 O 40 ] in strongly acidic solution showed high activity in the oxidation of methylarenes. [18] In this contribution, the photocatalytic activity of silica-and alumina-supported vanadium oxide species in the degradation of methyl orange in the aqueous phase is tested.…”

“…[3] In thermal catalysis, vanadium oxide-based catalysts are known for their high activity in oxidation reactions, and often they also show high selectivity. [4,5] The structure of the supported vanadium oxide species, but also the turnover frequency, i. e. the activity per vanadyl (V=O) site, changes with the nature of the support. This has been extensively reviewed previously.…”

New Solid Solution and Phase Equilibria in the Subsolidus Area of the Three-Component CuO–V2O5–Ta2O5 Oxide System

“…In turn, the CuO, V 2 O 5 and Ta 2 O 5 oxides, which are the components of the system selected for the study, belong to an interesting class of compounds, both in terms of their crystal structure and physicochemical properties. These oxides, due to their electrical and optical properties, are commercially important materials that are used in optoelectronic devices, energy conversion and as catalysts or photocatalysts [ 1 , 2 , 3 , 4 , 5 , 6 , 7 , 8 , 9 , 10 , 11 , 12 ]. Copper (II) oxide is used to obtain optical switches, field emission devices, lithium-ion electrode materials, gas sensors, biosensors and magnetic data carriers [ 1 , 2 , 3 , 4 ].…”

“…Copper (II) oxide is used to obtain optical switches, field emission devices, lithium-ion electrode materials, gas sensors, biosensors and magnetic data carriers [ 1 , 2 , 3 , 4 ]. The applications of vanadium (V) oxide include catalytic processes and the production of field-effect transistors, gas sensors, infrared detectors, glass dyes [ 5 , 6 , 7 , 8 , 9 , 10 ]. Tantalum (V) oxide, due to its high dielectric constant, is used in the production of semiconductors used in DRAM memories, high-frequency CMOS integrated circuits and flash memories [ 11 , 12 ].…”