Room-temperature isomerization of 1-butene to 2-butene over palladium-loaded silica nanospheres catalyst

Yang, Li; Ma, Chunyan; Yang, Hongxun; Zhang, Zhongshen; Zhang, Xin; Qiao, Nanli; Wang, Junhui; Hao, Zhengping

doi:10.1016/j.cej.2016.04.040

Cited by 14 publications

(9 citation statements)

References 46 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Similar ratios are observed without an isobutene co-feed (entry 6), showing that this additive does not dramatically influence selectivity. Selectivity for alkene isomerization between cis and trans isomers has been demonstrated in homogeneous , and heterogeneous , systems.…”

Section: Resultsmentioning

confidence: 99%

“…Only a few room temperature catalysts have recently been reported. 9,10 Stereochemical selectivity in butene isomerization is also important, as different isomers can have different relative reactivities in onward processes, such as metathesis, that can affect on-stream conversions. 11,12 While the thermodynamic product of isomerization is trans-2-butene, 13 kineticallycontrolled selectivity for cis-2-butene has been reported, for example by photolytic activation at ambient tempertaure, 10 using single-crystal Pt-surfaces, 14 or at the early stages of conversion in flow.…”

Section: ■ Introductionmentioning

confidence: 99%

“…The majority of metal-catalysts for butene isomerization are heterogeneous, , and operate at elevated temperatures which can result in selectivity and coking issues. Only a few room temperature catalysts have recently been reported. , …”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Solid–State Molecular Organometallic Catalysis in Gas/Solid Flow (Flow-SMOM) as Demonstrated by Efficient Room Temperature and Pressure 1-Butene Isomerization

et al. 2020

View full text Add to dashboard Cite

The use of solid−state molecular organometallic chemistry (SMOM−chem) to promote the efficient double bond isomerization of 1-butene to 2-butenes under flow−reactor conditions is reported. Single crystalline catalysts based upon the σ-alkane complexes [Rh(R 2 PCH 2 CH 2 PR 2 )(η 2 η 2 -NBA)][BAr F 4 ] (R = Cy, t Bu; NBA = norbornane; Ar F = 3,5-(CF 3 ) 2 C 6 H 3 ) are prepared by hydrogenation of a norbornadiene precursor. For the t Busubstituted system this results in the loss of long-range order, which can be re-established by addition of 1-butene to the material to form, in an order/disorder/order phase change. Deployment under flow-reactor conditions results in very different on-stream stabilities. With R = Cy rapid deactivation (3 h) to the butadiene complex occurs, [Rh(Cy 2 PCH 2 CH 2 PCy 2 )(butadiene)][BAr F 4 ], which can be reactivated by simple addition of H 2 . While the equivalent butadiene complex does not form with R = t Bu at 298 K and on-stream conversion is retained up to 90 h, deactivation is suggested to occur via loss of crystallinity of the SMOM catalyst. Both systems operate under the industrially relevant conditions of an isobutene co-feed. cis:trans selectivites for 2-butene are biased in favor of cis for the t Bu system and are more leveled for Cy.

show abstract

Section: Resultsmentioning

confidence: 99%

Section: ■ Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Solid–State Molecular Organometallic Catalysis in Gas/Solid Flow (Flow-SMOM) as Demonstrated by Efficient Room Temperature and Pressure 1-Butene Isomerization

et al. 2020

View full text Add to dashboard Cite

show abstract

“…Other homogenous systems are known, 14 , 114 , 118 as are heterogeneous systems that operate at room temperature. 119 , 120 However, we believe that catalysts such as [1-(ethene) 2 ][BAr F 4 ]-Hex are the first well-defined molecular systems that operate at 298 K under, industrially appealing, solid/gas conditions. In addition, they offer fine control of the spatial environment in the solid-state ( i.e.…”

Section: Resultsmentioning

confidence: 99%

Solid-state molecular organometallic chemistry. Single-crystal to single-crystal reactivity and catalysis with light hydrocarbon substrates

et al. 2017

View full text Add to dashboard Cite

show abstract

“…The search for high-efficiency catalysts has been a long-time quest not only in lab research but also in the chemical industry in consideration of both their environmental and economic benefits. Noble metal nanoparticles (NMNPs), characterized by high catalytic activity in many chemical conversions including hydrogenation, dehydrogenation, oxidation, reduction, aromatization, isomerization, etc., have attracted intensive attentions and gotten continuous improvements in the past few decades. − One of the most important issues in the past research endeavors is to prevent the NMNPs agglomeration which could decrease the activity of NMNPs.…”

Section: Introductionmentioning

confidence: 99%

Inserting Pt Nanoparticles at the Designated Location inside Metal–Organic Frameworks for Promoted Catalytic Performance

Liu

Wang

et al. 2020

Inorg. Chem.

View full text Add to dashboard Cite

Metal−organic frameworks (MOFs)-supported noble metal nanoparticles (NMNPs) catalysts attract increasing attention due to their high durability and efficiency in catalytic reactions. In this work, Pt nanoparticles are inserted at the designated location inside MIL-100(Fe) to investigate the location-effect of NMNPs inside MOFs on the catalytic reaction. The comparison test on the reduction of p-nitrophenol suggests that the location of the Pt nanoparticles inside MIL-100(Fe) largely influences the catalytic performance and the Pt nanoparticles inside MIL-100(Fe) locate closer to the outer surface of the MIL-100(Fe), providing higher catalytic efficiency. Possible reasons are concluded as the location of the Pt nanoparticles inside MIL-100(Fe) dominates the reactants transport pathway and the loading amount of Pt nanoparticles.

show abstract

Room-temperature isomerization of 1-butene to 2-butene over palladium-loaded silica nanospheres catalyst

Cited by 14 publications

References 46 publications

Solid–State Molecular Organometallic Catalysis in Gas/Solid Flow (Flow-SMOM) as Demonstrated by Efficient Room Temperature and Pressure 1-Butene Isomerization

Solid–State Molecular Organometallic Catalysis in Gas/Solid Flow (Flow-SMOM) as Demonstrated by Efficient Room Temperature and Pressure 1-Butene Isomerization

Solid-state molecular organometallic chemistry. Single-crystal to single-crystal reactivity and catalysis with light hydrocarbon substrates

Inserting Pt Nanoparticles at the Designated Location inside Metal–Organic Frameworks for Promoted Catalytic Performance

Contact Info

Product

Resources

About