Acetoxylation of acetylene to vinyl acetate monomer over bimetallic Zn-Ni/AC catalysts

He, Peijie; Wu, Xueyi; Huang, Liuhua; Zhu, Mingyuan; Wang, Xugen; Dai, Bin

doi:10.1016/j.catcom.2018.02.022

Cited by 19 publications

(9 citation statements)

References 26 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In addition, in Zhu et al the catalyst carrier was modified by impregnation with boric acid and showed good performance. Wang et al , added Co and Ni as additives to Zn(CH 3 COO) 2 /AC and explained the reaction mechanism.…”

Section: Introductionmentioning

confidence: 99%

A Highly Active In Situ Zn(CH₃COO)₂-NC Catalyst for the Acetoxylation of Acetylene

Zhang

et al. 2022

Ind. Eng. Chem. Res.

Self Cite

View full text Add to dashboard Cite

A new catalyst, in situ Zn(CH3COO)2-NC, is prepared by a facile in situ generation method. With impregnation, drying, and high-temperature treatment, the precursor was obtained and then activated by acetic acid, generating Zn(OAc)2-iNC catalyst in situ. According to X-ray diffraction, high-resolution transmission electron microscopy, thermogravimetric analysis, X-ray photoelectron spectroscopy, and other characterizations, ZnO could generate Zn(CH3COO)2. In addition, Zn–N bonds were formed after Zn combined with N elements, and the initially stacked zinc elements uniformly dispersed on the carrier during the in situ generation. After investigating the reaction process and reaction mechanism, the catalyst structure was obtained by DFT theory and Gaussian software calculations. The Zn(CH3COO)2-iNC catalysts had better catalytic performances compared with the traditional industrial Zn(CH3COO)2/AC catalysts, while the conversion rate on Zn(CH3COO)2-iNC catalysts was 280% times that on Zn(CH3COO)2/AC catalysts. After 72-h of stable operation, the conversion rate remained high at 98%.

show abstract

Section: Introductionmentioning

confidence: 99%

A Highly Active In Situ Zn(CH₃COO)₂-NC Catalyst for the Acetoxylation of Acetylene

Zhang

et al. 2022

Ind. Eng. Chem. Res.

Self Cite

View full text Add to dashboard Cite

show abstract

“…Although it has been used in industry, there are still many shortcomings, such as a low conversion rate, easy agglomeration, deactivation of active components, and carbon deposition on catalysts. To deal with these problems, He et al improved the activity and stability of the catalyst by doping bimetallic Zn-Ni [ 10 ] and Zn-Co [ 11 ]. Some researchers prepared V 2 O 5 -ZnO and Fe 2 O 3 -ZnO composite catalysts to extend the service life of the catalyst, but the results were not satisfactory [ 12 , 13 ].…”

Section: Introductionmentioning

confidence: 99%

MOFs-Derived Zn-Based Catalysts in Acetylene Acetoxylation

Chen

et al. 2021

Nanomaterials

Self Cite

View full text Add to dashboard Cite

Metal–organic frameworks (MOFs)-derived materials with a large specific surface area and rich pore structures are favorable for catalytic performance. In this work, MOFs are successfully prepared. Through pyrolysis of MOFs under nitrogen gas, zinc-based catalysts with different active sites for acetylene acetoxylation are obtained. The influence of the oxygen atom, nitrogen atom, and coexistence of oxygen and nitrogen atoms on the structure and catalytic performance of MOFs-derived catalysts was investigated. According to the results, the catalysts with different catalytic activity are Zn-O-C (33%), Zn-O/N-C (27%), and Zn-N-C (12%). From the measurements of X-ray photoelectron spectroscopy (XPS), it can be confirmed that the formation of different active sites affects the electron cloud density of zinc. The electron cloud density of zinc affects the ability to attract CH3COOH, which makes catalysts different in terms of catalytic activity.

show abstract

“…The catalyst used in the acetylene method is zinc acetate/ activated carbon (Zn(OAc) 2 /AC). [26][27][28] The structure of the active component, zinc acetate, has been theoretically investigated.…”

Section: Computational Model Of the Zn(oac) 2 /Ac Catalystmentioning

confidence: 99%

A multiscale simulation on the formation mechanism of crotonaldehyde and the influence of operating parameters on the process during the production of vinyl acetate from acetylene

et al. 2023

View full text Add to dashboard Cite

show abstract

Acetoxylation of acetylene to vinyl acetate monomer over bimetallic Zn-Ni/AC catalysts

Cited by 19 publications

References 26 publications

A Highly Active In Situ Zn(CH₃COO)₂-NC Catalyst for the Acetoxylation of Acetylene

A Highly Active In Situ Zn(CH₃COO)₂-NC Catalyst for the Acetoxylation of Acetylene

MOFs-Derived Zn-Based Catalysts in Acetylene Acetoxylation

A multiscale simulation on the formation mechanism of crotonaldehyde and the influence of operating parameters on the process during the production of vinyl acetate from acetylene

Contact Info

Product

Resources

About

Acetoxylation of acetylene to vinyl acetate monomer over bimetallic Zn-Ni/AC catalysts

Cited by 19 publications

References 26 publications

A Highly Active In Situ Zn(CH3COO)2-NC Catalyst for the Acetoxylation of Acetylene

A Highly Active In Situ Zn(CH3COO)2-NC Catalyst for the Acetoxylation of Acetylene

MOFs-Derived Zn-Based Catalysts in Acetylene Acetoxylation

A multiscale simulation on the formation mechanism of crotonaldehyde and the influence of operating parameters on the process during the production of vinyl acetate from acetylene

Contact Info

Product

Resources

About

A Highly Active In Situ Zn(CH₃COO)₂-NC Catalyst for the Acetoxylation of Acetylene

A Highly Active In Situ Zn(CH₃COO)₂-NC Catalyst for the Acetoxylation of Acetylene