Selective Hydrogenation of Single Benzene Ring in Biphenyl Catalyzed by Skeletal Ni

Lü, Lianhai; Rong, Zeming; Du, Wentao; Ma, Shaoping; Hu, Shuang

doi:10.1002/cctc.200900141

Cited by 46 publications

(29 citation statements)

References 42 publications

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“…of Raney Ni and tungstic acid, with its advantages of a low cost, a high yield of EG, and excellent reusability, will have great potential for the industrial application of this process. 3 ) was obtained from the calcination of AMT at 723 K for 5 h. Raney Ni, which was prepared from rapidly quenched Ni-Al-Mo alloys, [17] was kindly provided by the Dalian University of Technology. AC, with a Brunauer-Emmett-Teller (BET) surface area of 709 m 2 g À1 , was supplied by NORIT.…”

Section: Discussionmentioning

confidence: 99%

Catalytic Conversion of Cellulose to Ethylene Glycol over a Low‐Cost Binary Catalyst of Raney Ni and Tungstic Acid

et al. 2013

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Following our previous report on the selective transformation of cellulose to ethylene glycol (EG) over a binary catalyst composed of tungstic acid and Ru/C, we herein report a new low‐cost but more effective binary catalyst by using Raney nickel in place of Ru/C (Raney Ni+H2WO4). In addition to tungstic acid, other W compounds were also investigated in combination with Raney Ni. The results showed that the EG yield depended on the W compound: H4SiW12O40<H3PW12O40<WO3<H2WO4, but all the investigated W compounds were selective towards EG. Moreover, both WO3 and H2WO4 were dissolved partially under the reaction conditions and transformed into HxWO3, which is the genuinely active species for the CC bond breakage of cellulose. This result further confirmed that the reaction that involves the selective breakage of the CC bonds of cellulose with W species is homogenous. Among various binary catalysts, the combination of Raney Ni and H2WO4 gave the highest yield of EG (65 %), which could be attributed to the high activity of Raney Ni for hydrogenation and its inertness for the further degradation of EG. Moreover, Raney Ni+H2WO4 showed good reusability; it could be reused at least 17 times without any decay in the EG yield, which shows its great potential for industrial applications.

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Section: Discussionmentioning

confidence: 99%

Catalytic Conversion of Cellulose to Ethylene Glycol over a Low‐Cost Binary Catalyst of Raney Ni and Tungstic Acid

et al. 2013

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“…found that the CHB selectivity over Raney Ni−Al alloy in dilute aqueous alkaline solution without any organic solvents at 90 °C under atmospheric pressure could reach to 95 %. Lu et al [11a] . found that the skeletal Ni prepared from rapidly quenched Ni−Al alloys ribbons could afford 100 % BP conversion and 99 % CHB selectivity in a one‐pot reaction, which was even superior than Rt/C, Ru/C and Rd/C catalyst.…”

Section: Introductionmentioning

confidence: 99%

Effects of Ni‐Loading on the Performance of Ni/SiO₂ Catalysts for the Highly Selective Hydrogenation of Biphenyl to Cyclohexylbenzene

Zhao

et al. 2021

ChemistrySelect

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This article investigated the effects of Ni loading on the performance of Ni/SiO2 catalysts for the selective hydrogenation of biphenyl (BP) to cyclohexylbenzene (CHB). The catalysts were characterized by the techniques of thermogravimetric analysis, X‐ray powder diffraction, N2‐physisorption, scanning electron microscope, inductively coupled plasma‐atomic emission spectroscopy, transmission electron microscope, H2 temperature‐programmed reduction. It was found that under the given reaction conditions, BP conversion showed an increased trend with the increasing Ni loading. However, 25 % Ni/SiO2 catalyst exhibited the lower CHB yield than 20 % Ni/SiO2 catalyst, which was attributed to the overhydrogenation of BP on the former with the excessive metal active sites. Besides, over 25 % Ni/SiO2 catalyst, BP conversion gradually increased with the extended reaction time, the enhanced hydrogen pressure or the improved temperature, but CHB selectivity and yield increased first and then decreased. Additionally, isopropanol was considered to be the best one among the representative solvents in BP hydrogenation reaction. Moreover, the conversion of BP and the selectivity/yield of CHB could keep above 99 % and 96 %, respectively, after eight consecutive cycles.

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“…Despite long history of skeletal nickel it is still actively studied and applied in the industry . Skeletal nickel has a number of well‐known advantages: high activity and selectivity and disadvantages: low stability and life time …”

Section: Introductionmentioning

confidence: 99%

Correlation of Distribution Functions of Hydrogen Adsorption and Disodium Maleate Hydrogenation Activity for the Nickel Catalyst in Aqueous Solution

et al. 2020

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In the design of a chemical process, both chemical thermodynamics and chemical kinetics matter. The article is devoted to solving the problem of finding the relation between these approaches. The effects of the nature and composition of solvents onto the thermodynamic characteristics of the adsorption states of hydrogen adsorbed on nickel and onto the activity of the nickel catalyst were studied. For these purposes, the following was done: (i) differential heats of hydrogen adsorption in a wide range of surface coverage and maximum quantity of adsorbed hydrogen were determined by adsorption calorimetry on partially deactivated nickel catalyst from solutions; (ii) the activity of the catalyst for the corresponding systems was measured from kinetic experiments. The correlation between a catalyst activity and an adsorption energy distribution of hydrogen adsorbed was reported, it will subsequently predict the activity of the catalyst without experiment.

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Selective Hydrogenation of Single Benzene Ring in Biphenyl Catalyzed by Skeletal Ni

Cited by 46 publications

References 42 publications

Catalytic Conversion of Cellulose to Ethylene Glycol over a Low‐Cost Binary Catalyst of Raney Ni and Tungstic Acid

Catalytic Conversion of Cellulose to Ethylene Glycol over a Low‐Cost Binary Catalyst of Raney Ni and Tungstic Acid

Effects of Ni‐Loading on the Performance of Ni/SiO₂ Catalysts for the Highly Selective Hydrogenation of Biphenyl to Cyclohexylbenzene

Correlation of Distribution Functions of Hydrogen Adsorption and Disodium Maleate Hydrogenation Activity for the Nickel Catalyst in Aqueous Solution

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Selective Hydrogenation of Single Benzene Ring in Biphenyl Catalyzed by Skeletal Ni

Cited by 46 publications

References 42 publications

Catalytic Conversion of Cellulose to Ethylene Glycol over a Low‐Cost Binary Catalyst of Raney Ni and Tungstic Acid

Catalytic Conversion of Cellulose to Ethylene Glycol over a Low‐Cost Binary Catalyst of Raney Ni and Tungstic Acid

Effects of Ni‐Loading on the Performance of Ni/SiO2 Catalysts for the Highly Selective Hydrogenation of Biphenyl to Cyclohexylbenzene

Correlation of Distribution Functions of Hydrogen Adsorption and Disodium Maleate Hydrogenation Activity for the Nickel Catalyst in Aqueous Solution

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Effects of Ni‐Loading on the Performance of Ni/SiO₂ Catalysts for the Highly Selective Hydrogenation of Biphenyl to Cyclohexylbenzene