Kinetics of Acetylene Hydrochlorination over Bimetallic Au–Cu/C Catalyst

Wang, Shengjie; Shen, Benxian; Qinglei, Song

doi:10.1007/s10562-009-0216-4

Cited by 134 publications

(95 citation statements)

References 19 publications

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“…2. This relationship can be confirmed by the proposed mechanism from Wang et al; 2010 [26], who revealed that C2H2 complex adsorbed on gold active species via Eley-Rideal mechanism reacts with hydrogen chloride in gas phase to produce vinyl chloride monomer. Thus, the catalyst performance is related with abilities of supplying Cl -from catalyst or reduction ability as related with TPR results in Fig.…”

Section: Fig 2 H2 -Tpr Profiles Of Gold Catalysts Synthesized By Ulsupporting

confidence: 54%

Synthesis of Au/C Catalysts by Ultrasonic-Assisted Technique for Vinyl Chloride Monomer Production

Wittanadecha

Laosiripojana

Ketcong³

et al. 2014

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Abstract. In the present work, the ultrasonic-assisted technique is applied to synthesize Au/C catalysts for vinyl chloride monomer (VCM) production via acetylene hydrochlorination. The catalytic performance of the obtained catalysts is compared with that of the catalyst prepared by a conventional incipient wetness impregnation technique. It was found that all the prepared catalysts show high VCM selectivity (>99.5%). The use of the ultrasonic-assisted technique can significantly improve the catalytic activity and stability of the synthesized Au/C catalysts. An ultrasonic driven time of 6 hours is found to be a promising catalyst for commercial application regarding the catalyst stability. In addition, the effect of operating parameters is investigated. Suitable operating temperature and HCl/C2H2 feed ratio are 180 o C and 1.1, respectively.

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Section: Fig 2 H2 -Tpr Profiles Of Gold Catalysts Synthesized By Ulsupporting

confidence: 54%

Synthesis of Au/C Catalysts by Ultrasonic-Assisted Technique for Vinyl Chloride Monomer Production

Wittanadecha

Laosiripojana

Ketcong³

et al. 2014

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“…In his initial study the activity of metal catalysts is found to be related with the associated metal ions' standard electrode potentials [1] and AuCl 3 has a higher electrode potential. Subsequently, there was a great deal of research on gold catalysts [2][3][4][5][6][7][8][9][10][11][12][13][14][15]. However, Au-based catalysts do not have their advantages of economic performance because of the high price of Au.…”

Section: Introductionmentioning

confidence: 99%

Synthesis of Vinyl Chloride Monomer over Carbon-Supported Tris-(Triphenylphosphine) Ruthenium Dichloride Catalysts

Zhang

Man

et al. 2018

Catalysts

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A series of catalysts, including Ru/AC, φ-P-Ru/AC, φ-P-Ru/AC-HCl, and φ-P-Ru/AC-HNO 3 , were prepared and evaluated for the hydrochlorination reaction of acetylene. The test results reveal that the φ-P-Ru/AC-HNO 3 catalyst shows superior catalytic performance with an initial acetylene conversion of 97.2% and a relative increment of 87.0% within 48 h in comparison with that of the traditional RuCl 3 catalyst. The substitution of inorganic RuCl 3 precursor by organic φ-P-Ru complex species in the catalysts results in more active species and tends to confine them in the micro-pores; the modification of carbon support by nitric acid in φ-P-Ru catalyst may produce an interaction between the functional groups on modified support and Ru species, which is favorable to anchor and then reduce the loss of active species during the reaction, further increasing the amount of dominating Ru species, and greatly improving the reactants adsorption ability on the catalysts, thus enhancing the performance of the resultant catalysts. The as-prepared φ-P-Ru catalysts are shown to be promising mercury-free candidates for the synthesis of vinyl chloride monomer.

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“…In addition to AuCl 3 and PdCl 2 , a variety of other transition metal chlorides are known to have catalytic activity for acetylene hydrochlorination, such as Cu 2+ [21], Ag + [10], Pt 2+ [5,18], Rh 3+ [10,11,22], Ir 3+ [11] and Ru 3+ [10,11]. Nkosi et al compared the activity and deactivation rates of some metal chlorides in acetylene hydrochlorination (Table 1), and confirmed that the catalytic activity correlates well with the standard electrode potential of the metal.…”

Section: Other Metal Catalystsmentioning

confidence: 99%

Progress on cleaner production of vinyl chloride monomers over non-mercury catalysts

Zhang

Liu

et al. 2011

Front. Chem. Sci. Eng.

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Polyvinyl chloride (PVC) has become the third most used plastic after polyethylene and polypropylene and the worldwide demand continues to increase. Polyvinyl chloride is produced by polymerization of the vinyl chloride monomer (VCM), which is manufactured industrially via the dehydrochlorination of dichloroethane or the hydrochlorination of acetylene. Currently PVC production through the acetylene hydrochlorination method accounts for about 70% of the total PVC production capacity in China. However, the industrial production of VCM utilizes a mercuric chloride catalyst to promote the reaction of acetylene and hydrogen chloride. During the hydrochlorination, the highly toxic mercuric chloride tends to sublime, resulting in the deactivation of the catalyst and also in severe environmental pollution problems. Hence, for China, it is necessary to explore environmental friendly non-mercury catalysts for acetylene hydrochlorination as well as high efficiency novel reactors, with the aim of sustainable PVC production via the acetylene-based method. This paper presents a review of non-mercury heterogeneous and homogeneous catalysts as well as reactor designs, and recommends future work for developing cleaner processes to produce VCM over nonmercury catalysts with high activity and long stability.

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Kinetics of Acetylene Hydrochlorination over Bimetallic Au–Cu/C Catalyst

Cited by 134 publications

References 19 publications

Synthesis of Au/C Catalysts by Ultrasonic-Assisted Technique for Vinyl Chloride Monomer Production

Synthesis of Au/C Catalysts by Ultrasonic-Assisted Technique for Vinyl Chloride Monomer Production

Synthesis of Vinyl Chloride Monomer over Carbon-Supported Tris-(Triphenylphosphine) Ruthenium Dichloride Catalysts

Progress on cleaner production of vinyl chloride monomers over non-mercury catalysts

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