Acetylene catalytic hydrochlorination over mechanically pre-activated K2PdCl4 salt: A study of the reaction mechanism

Activated carbon supported ternary gold–cesium(i)–indium(iii) catalyst for the hydrochlorination of acetylene

“…The long-term stability observed in this work indicates that the ternary Au1Co(III)3Cu(II)1/SAC catalyst can maintain high catalytic activity for at least 6513 h at a low GHSV(C 2 H 2 ) of 30 h -1 . This 15 high performance of the ternary Au1Co(III)3Cu(II)1/SAC catalyst was attributed to the synergistic effect of Co(III) and Cu(II) which enhanced the adsorption of hydrogen chloride and increased the amount of Au + and Au 3+ active species over the catalyst. Since highly efficient catalytic systems are always 20 desirable, it is necessary to find new approaches of catalyst promotion.…”

“…It delivered a stable performance within the conversion of acetylene, reaching more than 92.8% and there was only 3.7% C 2 H 2 conversion loss after 50 h running under the reaction conditions of temperature 180 °C and C 2 H 2 hourly space velocity of 1480 h -1 . 15 Moreover, the 1Au1In III 4Cs I /AC catalyst delivered a stable performance with an estimated lifetime exceeding 6520 h at C 2 H 2 hourly space velocity of 50 h -1 . H 2 -TPR, TEM, HCl-TPD, C 2 H 2 -TPD, XPS and TGA techniques were further applied to reveal the structural information on the Au-In III -Cs I /AC catalysts.…”

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

“…[6][7][8][9][10][11][12][13][14] Nevertheless metal chloride catalysts are often encountered with rapid deactivation problems because that some metallic cations are readily reduced to zero-valent metal by acetylene along with the reaction. 7,8 The weak interaction between catalysts and substrates also results in loss of active components.…”

Enhancement of Au/AC acetylene hydrochlorination catalyst activity and stability via nitrogen-modified activated carbon support

“…Hutchings et al carried out pioneering work to investigate the use of supported Au catalysts for acetylene hydrochlorination [8][9][10][11][12][13]. Although several metal chlorides including Pt 4+ [14,15], Pd 2+ [16,17], Ru 3+ [18] and Bi 3+ [19] have also been applied as possible non-mercury catalysts for acetylene hydrochlorination, AuCl 3 is proved to be the best replacement of HgCl 2 for this process because of its high activity. Compared with HgCl 2 , the activity of AuCl 3 , on a molar basis of metal, is higher by an order of magnitude [3].…”