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Author:

Wu, Linke (Wu, Linke.) | Deng, Jiguang (Deng, Jiguang.) | Liu, Yuxi (Liu, Yuxi.) | Jing, Lin (Jing, Lin.) | Yu, Xiaohui (Yu, Xiaohui.) | Tao, Jinxiong (Tao, Jinxiong.) | Gao, Ruyi (Gao, Ruyi.) | Feng, Ying (Feng, Ying.) | Dai, Hongxing (Dai, Hongxing.)

Indexed by:

EI Scopus SCIE

Abstract:

The development of cost-effective catalysts with excellent chlorine resistance and harmful by-products inhibition is important for the environmentally friendly purification of multi-component volatile organic compounds (VOCs and chlorine-containing VOCs (CVOCs)). In this work, the Sn-doped Silicalite-1-supported Ru (Ru@Silicalite-1Sn-x, and x is the molar ratio of Si/Sn) samples were prepared using a hydrothermal strategy, and catalytic activities of these materials were investigated for the oxidative removal of mixed VOCs (dichloromethane (DCM) and toluene). The Ru@Silicalite-1-Sn-50 sample with tightly coupled redox and acidic sites exhibited high catalytic activity (T90% = 287 degrees C for toluene oxidation and T90% = 361 degrees C for DCM oxidation at a space velocity of 40,000 mL/(g h); specific reaction rate and turnover frequency (TOFRu) for toluene oxidation at 170 degrees C were 9.67 mu mol/(gcat h) and 0.98 x 10-3 s-1, and specific reaction rate and TOFRu for DCM oxidation at 200 degrees C were 3.84 mu mol/(gcat h) and 0.46 x 10-3 s-1, respectively), excellent catalytic stability (within 100 h of on-stream oxidation at 380 degrees C), and effective inhibition of toxic chlorine-containing by-products formation in the oxidation of (DCM and toluene). The doping of Sn could effectively anchor the Ru atoms to result in single-atom dispersion of Ru and generate oxygen vacancies, and optimized the synergistic interaction between Lewis acid sites and Br & oslash;nsted acid sites. The high concentration of oxygen vacancies and enriched Br & oslash;nsted acid sites promoted the cleavage of C-Cl bonds in DCM and accelerated the desorption of Cl species as inorganic chlorine. In the meanwhile, the strong electron transfer within the Sn-O-Si bond increased the Lewis acidity, which promoted the deep oxidation of dechlorinated intermediates/other intermediates over Ru@Silicalite-1-Sn-50. We believe that the present work provides a feasible and promising strategy for the design of efficient catalysts for the destruction of multicomponent VOCs and CVOCs in an industrial scale.

Keyword:

Supported Ru single-atom catalyst Catalytic oxidation Toluene Tin-doped Silicalite-1 Dichloromethane Volatile organic compound

Author Community:

  • [ 1 ] [Wu, Linke]Educ Minist China, Beijing Key Lab Green Catalysis & Separat, Key Lab Beijing Reg Air Pollut Control, Key Lab Adv Funct Mat, Beijing, Peoples R China
  • [ 2 ] [Deng, Jiguang]Educ Minist China, Beijing Key Lab Green Catalysis & Separat, Key Lab Beijing Reg Air Pollut Control, Key Lab Adv Funct Mat, Beijing, Peoples R China
  • [ 3 ] [Liu, Yuxi]Educ Minist China, Beijing Key Lab Green Catalysis & Separat, Key Lab Beijing Reg Air Pollut Control, Key Lab Adv Funct Mat, Beijing, Peoples R China
  • [ 4 ] [Jing, Lin]Educ Minist China, Beijing Key Lab Green Catalysis & Separat, Key Lab Beijing Reg Air Pollut Control, Key Lab Adv Funct Mat, Beijing, Peoples R China
  • [ 5 ] [Yu, Xiaohui]Educ Minist China, Beijing Key Lab Green Catalysis & Separat, Key Lab Beijing Reg Air Pollut Control, Key Lab Adv Funct Mat, Beijing, Peoples R China
  • [ 6 ] [Tao, Jinxiong]Educ Minist China, Beijing Key Lab Green Catalysis & Separat, Key Lab Beijing Reg Air Pollut Control, Key Lab Adv Funct Mat, Beijing, Peoples R China
  • [ 7 ] [Gao, Ruyi]Educ Minist China, Beijing Key Lab Green Catalysis & Separat, Key Lab Beijing Reg Air Pollut Control, Key Lab Adv Funct Mat, Beijing, Peoples R China
  • [ 8 ] [Feng, Ying]Educ Minist China, Beijing Key Lab Green Catalysis & Separat, Key Lab Beijing Reg Air Pollut Control, Key Lab Adv Funct Mat, Beijing, Peoples R China
  • [ 9 ] [Dai, Hongxing]Educ Minist China, Beijing Key Lab Green Catalysis & Separat, Key Lab Beijing Reg Air Pollut Control, Key Lab Adv Funct Mat, Beijing, Peoples R China
  • [ 10 ] [Wu, Linke]Beijing Univ Technol, Coll Mat Sci & Engn, Dept Chem Engn, Lab Catalysis Chem & Nanosci, Beijing 100124, Peoples R China
  • [ 11 ] [Deng, Jiguang]Beijing Univ Technol, Coll Mat Sci & Engn, Dept Chem Engn, Lab Catalysis Chem & Nanosci, Beijing 100124, Peoples R China
  • [ 12 ] [Liu, Yuxi]Beijing Univ Technol, Coll Mat Sci & Engn, Dept Chem Engn, Lab Catalysis Chem & Nanosci, Beijing 100124, Peoples R China
  • [ 13 ] [Jing, Lin]Beijing Univ Technol, Coll Mat Sci & Engn, Dept Chem Engn, Lab Catalysis Chem & Nanosci, Beijing 100124, Peoples R China
  • [ 14 ] [Yu, Xiaohui]Beijing Univ Technol, Coll Mat Sci & Engn, Dept Chem Engn, Lab Catalysis Chem & Nanosci, Beijing 100124, Peoples R China
  • [ 15 ] [Tao, Jinxiong]Beijing Univ Technol, Coll Mat Sci & Engn, Dept Chem Engn, Lab Catalysis Chem & Nanosci, Beijing 100124, Peoples R China
  • [ 16 ] [Gao, Ruyi]Beijing Univ Technol, Coll Mat Sci & Engn, Dept Chem Engn, Lab Catalysis Chem & Nanosci, Beijing 100124, Peoples R China
  • [ 17 ] [Feng, Ying]Beijing Univ Technol, Coll Mat Sci & Engn, Dept Chem Engn, Lab Catalysis Chem & Nanosci, Beijing 100124, Peoples R China
  • [ 18 ] [Dai, Hongxing]Beijing Univ Technol, Coll Mat Sci & Engn, Dept Chem Engn, Lab Catalysis Chem & Nanosci, Beijing 100124, Peoples R China

Reprint Author's Address:

  • [Deng, Jiguang]Educ Minist China, Beijing Key Lab Green Catalysis & Separat, Key Lab Beijing Reg Air Pollut Control, Key Lab Adv Funct Mat, Beijing, Peoples R China;;[Dai, Hongxing]Educ Minist China, Beijing Key Lab Green Catalysis & Separat, Key Lab Beijing Reg Air Pollut Control, Key Lab Adv Funct Mat, Beijing, Peoples R China;;

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Source :

APPLIED CATALYSIS B-ENVIRONMENT AND ENERGY

ISSN: 0926-3373

Year: 2024

Volume: 351

2 2 . 1 0 0

JCR@2022

Cited Count:

WoS CC Cited Count:

SCOPUS Cited Count: 25

ESI Highly Cited Papers on the List: 0 Unfold All

WanFang Cited Count:

Chinese Cited Count:

30 Days PV: 2

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