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author:

Ge, Bingqing (Ge, Bingqing.) [1] | Hu, Yuandong (Hu, Yuandong.) [2] | Zhang, Hongwei (Zhang, Hongwei.) [3] (Scholars:张宏伟) | Xu, Junkang (Xu, Junkang.) [4] | Zhang, Peng (Zhang, Peng.) [5] | Yue, Yuanyuan (Yue, Yuanyuan.) [6] (Scholars:岳源源) | Zhu, Haibo (Zhu, Haibo.) [7] (Scholars:朱海波) | Lin, Sen (Lin, Sen.) [8] (Scholars:林森) | Yuan, Pei (Yuan, Pei.) [9] (Scholars:袁珮)

Indexed by:

EI Scopus SCIE

Abstract:

Three PdZr bi-component catalysts supported on modified silica have been successfully synthesized via different Zr introduction methods and utilized for the hydrogenation of nitrile butadiene rubber (NBR) to produce high value-added hydrogenated NBR. It is demonstrated that the introduction of Zr can lead to the formation of small sized and electron-rich Pd nanoparticles and the order of adding Zr can significantly affect the catalytic activity. In particular, the PdZr bi-component catalyst obtained by introducing Zr followed by adding Pd is found to be more stable on the silica support, which exhibits a high hydrogenation degree of 90.9% with 100% selectivity to C--C bond, close to the single Pd catalyst with double Pd contents. The electronic structure and reaction mechanism analysis from density functional theory calculations further reveal that the addition of Zr component leads to negatively charged Pd species with lower energy barrier for the hydrogenation of C--C bond. Our findings provide a useful guidance for the design of efficient and low-cost bi-component catalysts for the selective hydrogenation of unsaturated polymers.

Keyword:

DFT Hydrogenation NBR Promoter effect Supported Pd catalysts

Community:

  • [ 1 ] [Ge, Bingqing]Fuzhou Univ, Coll Chem Engn, Natl Engn Res Ctr Chem Fertilizer Catalyst, Fuzhou 350002, Peoples R China
  • [ 2 ] [Hu, Yuandong]Fuzhou Univ, Coll Chem Engn, Natl Engn Res Ctr Chem Fertilizer Catalyst, Fuzhou 350002, Peoples R China
  • [ 3 ] [Zhang, Hongwei]Fuzhou Univ, Coll Chem Engn, Natl Engn Res Ctr Chem Fertilizer Catalyst, Fuzhou 350002, Peoples R China
  • [ 4 ] [Zhang, Peng]Fuzhou Univ, Coll Chem Engn, Natl Engn Res Ctr Chem Fertilizer Catalyst, Fuzhou 350002, Peoples R China
  • [ 5 ] [Yue, Yuanyuan]Fuzhou Univ, Coll Chem Engn, Natl Engn Res Ctr Chem Fertilizer Catalyst, Fuzhou 350002, Peoples R China
  • [ 6 ] [Zhu, Haibo]Fuzhou Univ, Coll Chem Engn, Natl Engn Res Ctr Chem Fertilizer Catalyst, Fuzhou 350002, Peoples R China
  • [ 7 ] [Yuan, Pei]Fuzhou Univ, Coll Chem Engn, Natl Engn Res Ctr Chem Fertilizer Catalyst, Fuzhou 350002, Peoples R China
  • [ 8 ] [Ge, Bingqing]Fuzhou Univ, Coll Chem, State Key Lab Photocatalysis Energy & Environm, Fuzhou 350002, Peoples R China
  • [ 9 ] [Xu, Junkang]Fuzhou Univ, Coll Chem, State Key Lab Photocatalysis Energy & Environm, Fuzhou 350002, Peoples R China
  • [ 10 ] [Lin, Sen]Fuzhou Univ, Coll Chem, State Key Lab Photocatalysis Energy & Environm, Fuzhou 350002, Peoples R China

Reprint 's Address:

  • 林森 袁珮

    [Yuan, Pei]Fuzhou Univ, Coll Chem Engn, Natl Engn Res Ctr Chem Fertilizer Catalyst, Fuzhou 350002, Peoples R China;;[Lin, Sen]Fuzhou Univ, Coll Chem, State Key Lab Photocatalysis Energy & Environm, Fuzhou 350002, Peoples R China

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Source :

APPLIED SURFACE SCIENCE

ISSN: 0169-4332

Year: 2021

Volume: 539

7 . 3 9 2

JCR@2021

6 . 3 0 0

JCR@2023

ESI Discipline: MATERIALS SCIENCE;

ESI HC Threshold:142

JCR Journal Grade:1

CAS Journal Grade:1

Cited Count:

WoS CC Cited Count: 13

SCOPUS Cited Count: 16

ESI Highly Cited Papers on the List: 0 Unfold All

WanFang Cited Count:

Chinese Cited Count:

30 Days PV: 1

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