Palladium Nanoparticles Immobilized on Magnetic Porous Carbon Derived from ZIF‐67 as Efficient Catalysts for the Semihydrogenation of Phenylacetylene under Extremely Mild Conditions

Li, Xinlin; Zhang, Wei; Liu, Yansheng; Li, Rong

doi:10.1002/cctc.201501283

Cited by 44 publications

(23 citation statements)

References 61 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Meanwhile it is an effective way to design selective hydrogenation catalyst for phenylacetylene by space confinement effect [26] . Encapsulating a guest (molecule, cluster, or nanoparticle) as a catalytic active center in a nanoporous host is one of the key strategies [27–29] . Metal organic framework (MOF) materials are ideal candidates for the nanoporous host [30–33] .…”

Section: Introductionmentioning

confidence: 99%

Pd−Zn Alloy Nanoparticles Encapsulated into Mesoporous Silica with Confinement Effect for Highly Selective Semi‐Hydrogenation of Phenylacetylene

Liu

et al. 2020

ChemCatChem

View full text Add to dashboard Cite

In the process of hydrogenation of phenylacetylene to styrene, it is a crucial step to improve the reaction selectivity of the target product styrene. Herein, we have designed the Pd−Zn alloy nanoparticles encapsulated into mesoporous silica with confinement effect (Pd−Zn@MS) for highly selective semi‐hydrogenation of phenylacetylene via annealing the Pd NPs@ZIF‐8 in reducing atmosphere. The as‐obtained Pd−Zn@MS achieved up to the 95 % of conversion rate and 92 % of selectivity, because the mesoporous silica exhibits a steric hindrance effect for the reactant molecular size, and the Pd−Zn alloy nanoparticles shows the high selectivity for the target product styrene. DFT calculations demonstrates that the PdZn alloy nanoparticles can reduce significantly the desorption energy barrier of styrene from 1.72 eV to 0.95 eV, compared with the Pd nanoparticles. Meanwhile the mesoporous silica in the outer layer greatly guarantees the stability of the catalytic performance of the catalyst, and the catalytic performance did not drop after the five‐cycle test. This work provides a new idea for the selective hydrogenation of phenylacetylene and the process of limited‐area catalysis.

show abstract

Section: Introductionmentioning

confidence: 99%

Pd−Zn Alloy Nanoparticles Encapsulated into Mesoporous Silica with Confinement Effect for Highly Selective Semi‐Hydrogenation of Phenylacetylene

Liu

et al. 2020

ChemCatChem

View full text Add to dashboard Cite

show abstract

“…The selective hydrogenation of multiple carbon-carbon bonds, nitroarenes, carbonyl compounds, and/or benzene rings is an important industrial process for the purification of alkene streams from petroleum cracking or to produce value-added chemicals [141][142][143][144][145]. Supported noble metals, particularly Pt [143,146,147], Pd [148][149][150], and Ru [147,[151][152][153], are highly active catalysts for hydrogenation reactions.…”

Section: Hydrogenation Reactionsmentioning

confidence: 99%

Graphitized nanocarbon-supported metal catalysts: synthesis, properties, and applications in heterogeneous catalysis

Huang

2017

Sci. China Mater.

View full text Add to dashboard Cite

Graphitized nanocarbon materials can be an ideal catalyst support for heterogeneous catalytic systems. Their unique physical and chemical properties, such as large surface area, high adsorption capacity, excellent thermal and mechanical stability, outstanding electronic properties, and tunable porosity, allow the anchoring and dispersion of the active metals. Therefore, currently they are used as the key support material in many catalytic processes. This review summarizes recent relevant applications in supported catalysts that use graphitized nanocarbon as supports for catalytic oxidation, hydrogenation, dehydrogenation, and C-C coupling reactions in liquid-phase and gas-solid phase-reaction systems. The latest developments in specific features derived from the morphology and characteristics of graphitized nanocarbon-supported metal catalysts are highlighted, as well as the differences in the catalytic behavior of graphitized nanocarbon-supported metal catalysts versus other related catalysts. The scientific challenges and opportunities in this field are also discussed. Keywords: nanocarbon materials; graphitized carbon supports; metal catalysts; hetergeneous catalysis INTRODUCTIONCarbon combines its atoms in diverse hybridization states (sp, sp 2 , sp 3 ) to form a variety of polymorphs. These are composed entirely of carbon but have different physical structures and different names, including diamond, graphite, fullerenes, and carbines, among others [1][2][3][4][5]. Because these various and versatile allotropes produce materials with a large range of properties, carbon materials can be used in a number of technological processes, including high-tech catalytic ones [6][7][8][9][10].In heterogeneous catalysis, carbon material plays wellestablished and important roles in a wide range of applications, both as catalyst in its own right and as a unique support material [11][12][13][14][15]. The chemical stability of carbon supports in some specifically aqueous phase biomass conversion surpasses that of metal oxide materials; in addition, carbon materials present other common and key advantages as support materials for catalysis [1,5]. From the point of physical structure, porous carbon can be prepared in different forms (granules, cloth, fibers, pallets, etc.). Due to its chemical properties, carbon structure is resistant to both acidic and basic media. The structure of carbon is stable at high temperature (even above 1023 K under inert atmosphere). The hydrophilic/ hydrophobic nature of carbon can be easily modified. Active metals on the support can be easily reduced. For the purposes of industrial economy and environment, the active phase can be easily recovered. Conventional carbon supports are lower-cost and more easily available than other conventional supports. Although several kinds of carbon materials have been studied, active carbon (AC) [12,[16][17][18][19] and, to a lesser extend, carbon black [20][21][22][23] have long been the most commonly used carbon supports. AC is an amorphous solid prepa...

show abstract

“…Selective hydrogenation of alkynes to alkenes, without further reduction to alkanes, is of fundamental importance for the production of fine chemicals as well as polymers throughout the petrochemical and agrochemical industries [1][2][3] . For instance, the preliminary removal of trace phenylacetylene from styrene feeds is a crucial purification process in olefin industry as phenylacetylene is regarded as not only a harmful component in styrene feedstocks, but also a poison for subsequent olefin polymerization catalysts [3][4][5] . However, this process requires some precise regulation because the process commonly accompanies with two undesired reactions: full hydrogenation of pheylacetylene to ethylbenzene and excessive hydrogenation of styrene to ethylbenzene.…”

Section: Introductionmentioning

confidence: 99%

Palladium nanoclusters immobilized on defective nanodiamond-graphene core-shell supports for semihydrogenation of phenylacetylene

Huang

Jia

Diao

et al. 2019

Journal of Energy Chemistry

View full text Add to dashboard Cite

Palladium Nanoparticles Immobilized on Magnetic Porous Carbon Derived from ZIF‐67 as Efficient Catalysts for the Semihydrogenation of Phenylacetylene under Extremely Mild Conditions

Cited by 44 publications

References 61 publications

Pd−Zn Alloy Nanoparticles Encapsulated into Mesoporous Silica with Confinement Effect for Highly Selective Semi‐Hydrogenation of Phenylacetylene

Pd−Zn Alloy Nanoparticles Encapsulated into Mesoporous Silica with Confinement Effect for Highly Selective Semi‐Hydrogenation of Phenylacetylene

Graphitized nanocarbon-supported metal catalysts: synthesis, properties, and applications in heterogeneous catalysis

Palladium nanoclusters immobilized on defective nanodiamond-graphene core-shell supports for semihydrogenation of phenylacetylene

Contact Info

Product

Resources

About