Bimetallic Au–Ni/CSs catalysts for acetylene hydrochlorination

Pu, Yanfeng; Zhang, Jinli; Wang, Xia; Zhang, Haiyang; Yu, Long; Dong, Yanzhao; Li, Wei

doi:10.1039/c4cy00769g

Cited by 58 publications

(49 citation statements)

References 27 publications

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“…Conte et al attempted to enhance the gold dispersion and improve the stability of its higher oxidation state by the addition of a second metal (Pd, Pt, Ru, Ir, Rh) [27]. Although the results of these synthesized bimetal catalysts are not satisfactory, they concluded that (1) Au-Pd 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 catalysts, including AuCu [28], AuLa [29], AuBa [30], AuNi [31], AuCs [32,33], AuBi [14], AuTiO 2 [34], and AuCoCu [35], were synthesized and applied to acetylene hydrochlorination by different laboratories, and the results are listed in Table 2.…”

Section: Au-based Catalystsmentioning

confidence: 99%

Development of a Heterogeneous Non-Mercury Catalyst for Acetylene Hydrochlorination

et al. 2015

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Due to the toxicity of mercury catalysts, a non-mercury heterogeneous catalyst for acetylene hydrochlorination has been widely investigated. In this review, we introduce the development of Au-based catalysts, Ru-based catalysts, other metal catalysts and a carbon nitride catalyst. The effect of the promoter and the carbon support property on the catalytic performance of the AuCl 3 catalyst is discussed in detail and the potential application of other catalysts is also reviewed on the basis of experimental and theoretical studies. At present, it is predicted that an Au-based catalyst may be the optimal candidate catalyst for industrial application in the production of polyvinyl chloride from calcium carbide, but other catalysts should still be further investigated to improve their catalytic performance and their cost advantages.

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Section: Au-based Catalystsmentioning

confidence: 99%

Development of a Heterogeneous Non-Mercury Catalyst for Acetylene Hydrochlorination

et al. 2015

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“…10,14 To address the problem, extensive efforts have been centered on synergistic bimetallic catalysts in which a second metal component is introduced to improve the stability of metal chloride. 3,[15][16][17][18][19][20] Meanwhile, some examples also demonstrate that nitrogen or phosphorus-doped carbon supports are able to stabilize metal components. [21][22][23] The enhanced basicity of N,P-doped carbon materials is believed to activate acidic acetylene and HCl molecules, and very recently, non-metallic catalysts including carbon nitride and pyrollic nitrogen-doped carbon are developed as new catalytic systems for hydrochlorination.…”

Section: Introductionmentioning

confidence: 99%

“…[16][17][18] Compared to gas-solid reaction, gas-liquid reaction can provide mild temperature control. Acetylene hydrochlorination using ILs as reaction media can not only provide environmentally friendly choices for gas-liquid systems than using volatile organic solvents but also have the potential of achieving better catalytic results due to the unique physicochemical properties of ILs.…”

Section: Introductionmentioning

confidence: 99%

Confining Noble Metal (Pd, Au, Pt) Nanoparticles in Surfactant Ionic Liquids: Active Non-Mercury Catalysts for Hydrochlorination of Acetylene

Yang

et al. 2015

ACS Catal.

106

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Metal catalysts often encounter the dilemma of rapid deactivation due to the reduction or particle aggregation/growth during the reaction. Here we reported an active and stable metal nanoparticles (NPs)/surfactant IL system for the catalytic hydrochlorination of acetylene. The NPs of Pd, Au, and Pt with a narrow size distribution and well-defined lattice fringes experienced in-situ generation in the reaction medium of anionic surfactant carboxylate ILs (ASC-ILs). Benefiting from the high reactivity of NPs and the self-assembly property of ASC-ILs, an effective redox cycle between Pd 0 and Pd II was established to reduce the deactivation of metal catalysts. The Pd NPs/surfactant IL systems showed excellent catalytic activity toward acetylene hydrochlorination. An acetylene conversion of 93% and a selectivity of 99.5% were achieved with no discernible deterioration over a reaction time of 55 hours. Furthermore, ASC-ILs were endowed with a unique property of the strong hydrogen-bond basicity, which was effective in absorbing and activating acetylene and HCl. This study manifests that metal NPs/surfactant IL systems are promising as substitutes for toxic mercury catalysts in the hydrochlorination of acetylene, and also is instructive for the stabilization of metal NPs.

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“…By analyzing Shionda's experimental data, Hutchings concluded that the activity of metal catalysts in acetylene hydrochlorination was correlated with the standard electrode potential of corresponding metal cations and confirmed that the AuCl 3 catalyst exhibited the optimal catalytic activity [6]. Subsequently, abundant studies have been implemented to develop the Au-based catalysts [7][8][9][10][11][12][13][14][15][16][17][18][19][20][21]. However, the Au-based catalyst is very precious.…”

Section: Introductionmentioning

confidence: 99%

Hydrochlorination of Acetylene Catalyzed by an Activated Carbon-Supported Ammonium Hexachlororuthenate Complex

Gao

Zhang

et al. 2017

Catalysts

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Ammonium hexachlororuthenate ((NH 4 ) 2 RuCl 6 ) complex was used as a catalyst precursor and coconut activated carbon (AC) was used as the support in the preparation process of the Ru-based catalyst. (NH 4 ) 2 RuCl 6 /AC catalyst was prepared via an incipient wetness impregnation method and assessed in an acetylene hydrochlorination reaction. Meanwhile, the (NH 4 ) 2 RuCl 6 /AC catalyst was analyzed with low-temperature N 2 adsorption/desorption, thermogravimetry (TG), transmission electron microscopy (TEM), temperature programmed reduction (TPR), X-ray photoelectron spectra (XPS), and temperature programmed desorption (TPD) techniques. Catalytic performance test results show that the (NH 4 ) 2 RuCl 6 /AC catalyst exhibits a superior catalytic activity with the highest acetylene conversion of 90.5% under the conditions of 170 • C and an acetylene gas hourly space velocity of 180 h −1 . The characterization results illustrate that the presence of the NH 4 + cation can inhibit coke deposition as well as the agglomeration of ruthenium particles, and it can also enhance the adsorption ability for reactant HCl, hence improving the catalytic activity and stability.

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Bimetallic Au–Ni/CSs catalysts for acetylene hydrochlorination

Cited by 58 publications

References 27 publications

Development of a Heterogeneous Non-Mercury Catalyst for Acetylene Hydrochlorination

Development of a Heterogeneous Non-Mercury Catalyst for Acetylene Hydrochlorination

Confining Noble Metal (Pd, Au, Pt) Nanoparticles in Surfactant Ionic Liquids: Active Non-Mercury Catalysts for Hydrochlorination of Acetylene

Hydrochlorination of Acetylene Catalyzed by an Activated Carbon-Supported Ammonium Hexachlororuthenate Complex

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