Selectivity boost in partial hydrogenation of acetylene via atomic dispersion of platinum over ceria

Abstract

A high-throughput flame spray pyrolysis directly affords low-loading Pt catalyst supported on cerium oxide, which is an excellent material for selective semihydrogenation of C2H2 at 180 C, exhibiting nearly complete...

One‐pot reduction‐hydrophobization of heterogenized platinum with 1,1,3,3‐tetramethyldisiloxane

“…[ 11 ] Besides hydrophobicity, these supports should not contain active groups that could catalyze undesirable side reactions, like isomerization. [ 5 ] Platinum is commonly deposited as a complex [ 12 ] or fine dispersion on silica, [ 12,13 ] alumina, [ 14 ] ceramic, [ 14 ] glass, [ 12 ] metallic, [ 15 ] or carbon [ 16,17 ] substrates, but the active carbon (simple [ 7 ] or fluorinated [ 5 ] ) is also preferred. In specific hydrosilylation reactions, the styrene‐divinylbenzene (SDVB) copolymers have been used as alternatives, [ 7,18 ] due to their hydrophobicity, [ 5 ] pore diameters larger than those of active carbon‐supported catalysts, [ 7 ] high specific surface area, and easy accessibility.…”

Building Stable Pillar-Layered Metal–Organic Frameworks: Introduction of Unsaturated Bonds for Enhanced Efficiency in C2H2/CO2 Separation

“…5,6 Consequently, the efficient separation and purification of C 2 H 2 from C 2 H 2 /CO 2 are paramount to guarantee the efficacy and reliability of industrial operations. 7,8 Traditional methods for the separation of low-carbon hydrocarbons, such as cryogenic distillation 9 and partial hydrogenation, 10 exhibit considerable operational complexity and high energy consumption and necessitate the application of stringent separation conditions. 11−14 In recent years, the separation of low-carbon hydrocarbons using porous materials has been extensively investigated and has effectively addressed the limitations of traditional methods.…”

“…Acetylene (C 2 H 2 ), as an important industrial raw material, − is seriously affected by carbon dioxide (CO 2 ) impurities in its wide application. , Consequently, the efficient separation and purification of C 2 H 2 from C 2 H 2 /CO 2 are paramount to guarantee the efficacy and reliability of industrial operations. , Traditional methods for the separation of low-carbon hydrocarbons, such as cryogenic distillation and partial hydrogenation, exhibit considerable operational complexity and high energy consumption and necessitate the application of stringent separation conditions. − In recent years, the separation of low-carbon hydrocarbons using porous materials has been extensively investigated and has effectively addressed the limitations of traditional methods. , While, high adsorption capacity, superior separation ratio, and excellent stability are imperative for porous materials in the C 2 H 2 /CO 2 separation process.…”