Acetylene hydrochlorination over tin nitrogen based catalysts: effect of nitrogen carbon-dots as nitrogen precursor
The catalysts comprising the main active compounds of Sn-Nx were synthesized using trichlorophenylstannane ((C H )Cl Sn), nitrogen carbon-dots (NCDs), and activated carbon (AC) as starting materials, and the activity and stability of catalysts was evaluated in the acetylene hydrochlorination. Accord...
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Published in | Turkish journal of chemistry Vol. 45; no. 5; pp. 1463 - 1475 |
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Main Authors | , , , , , , , , , , |
Format | Journal Article |
Language | English |
Published |
Turkey
The Scientific and Technological Research Council of Turkey
2021
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Abstract | The catalysts comprising the main active compounds of Sn-Nx were synthesized using trichlorophenylstannane ((C
H
)Cl
Sn), nitrogen carbon-dots (NCDs), and activated carbon (AC) as starting materials, and the activity and stability of catalysts was evaluated in the acetylene hydrochlorination. According to the results on the physical and chemical properties of catalysts (TEM, XRD, BET, XPS and TG), it is concluded that NCDs@AC can increase (C
H
)Cl
Sn dispersity, retard the coke deposition of (C
H
)Cl
Sn/AC and lessen the loss of (C
H
)Cl
Sn, thereby further promoting the stability of (C
H
)Cl
Sn/AC. Based on the characterization results of C
H
-TPD and HCl adsorption experiments, we proposed that the existence of Sn-N
can effectively strengthen the reactants adsorption of catalysts. By combing the FT-IR, C
H
-TPD and Rideal-Eley mechanism, the catalytic mechanism, in which C
H
is firstly adsorbed on (C
H
)Cl
Sn to form (C
H
)Cl
Sn-C
H
and then reacted with HCl to produce vinyl chloride, is proposed. |
---|---|
AbstractList | The catalysts comprising the main active compounds of Sn-Nx were synthesized using trichlorophenylstannane ((C6H5)Cl3Sn), nitrogen carbon-dots (NCDs), and activated carbon (AC) as starting materials, and the activity and stability of catalysts was evaluated in the acetylene hydrochlorination. According to the results on the physical and chemical properties of catalysts (TEM, XRD, BET, XPS and TG), it is concluded that NCDs@AC can increase (C6H5)Cl3Sn dispersity, retard the coke deposition of (C6H5)Cl3Sn/AC and lessen the loss of (C6H5)Cl3Sn, thereby further promoting the stability of (C6H5)Cl3Sn/AC. Based on the characterization results of C2H2-TPD and HCl adsorption experiments, we proposed that the existence of Sn-Nx can effectively strengthen the reactants adsorption of catalysts. By combing the FT-IR, C2H2-TPD and Rideal-Eley mechanism, the catalytic mechanism, in which C2H2 is firstly adsorbed on (C6H5)Cl3Sn to form (C6H5)Cl3Sn-C2H2 and then reacted with HCl to produce vinyl chloride, is proposed. The catalysts comprising the main active compounds of Sn-Nx were synthesized using trichlorophenylstannane ((C H )Cl Sn), nitrogen carbon-dots (NCDs), and activated carbon (AC) as starting materials, and the activity and stability of catalysts was evaluated in the acetylene hydrochlorination. According to the results on the physical and chemical properties of catalysts (TEM, XRD, BET, XPS and TG), it is concluded that NCDs@AC can increase (C H )Cl Sn dispersity, retard the coke deposition of (C H )Cl Sn/AC and lessen the loss of (C H )Cl Sn, thereby further promoting the stability of (C H )Cl Sn/AC. Based on the characterization results of C H -TPD and HCl adsorption experiments, we proposed that the existence of Sn-N can effectively strengthen the reactants adsorption of catalysts. By combing the FT-IR, C H -TPD and Rideal-Eley mechanism, the catalytic mechanism, in which C H is firstly adsorbed on (C H )Cl Sn to form (C H )Cl Sn-C H and then reacted with HCl to produce vinyl chloride, is proposed. The catalysts comprising the main active compounds of Sn-Nx were synthesized using trichlorophenylstannane ((C 6 H 5 )Cl 3 Sn), nitrogen carbon-dots (NCDs), and activated carbon (AC) as starting materials, and the activity and stability of catalysts was evaluated in the acetylene hydrochlorination. According to the results on the physical and chemical properties of catalysts (TEM, XRD, BET, XPS and TG), it is concluded that NCDs@AC can increase (C 6 H 5 )Cl 3 Sn dispersity, retard the coke deposition of (C 6 H 5 )Cl 3 Sn/AC and lessen the loss of (C 6 H 5 )Cl 3 Sn, thereby further promoting the stability of (C 6 H 5 )Cl 3 Sn/AC. Based on the characterization results of C 2 H 2 -TPD and HCl adsorption experiments, we proposed that the existence of Sn-N x can effectively strengthen the reactants adsorption of catalysts. By combing the FT-IR, C 2 H 2 -TPD and Rideal-Eley mechanism, the catalytic mechanism, in which C 2 H 2 is firstly adsorbed on (C 6 H 5 )Cl 3 Sn to form (C 6 H 5 )Cl 3 Sn-C 2 H 2 and then reacted with HCl to produce vinyl chloride, is proposed. |
Author | Liu, Peisong Zhao, Ganqing Han, Yongjun Cheng, Liping Luo, Shiying Li, Qingbin Li, Songtian Sun, Xuerong He, Guoxv Li, Fuxiang Wu, Yibo |
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Keywords | Trichlorophenylstannane vinyl chloride nitrogen carbon-dots acetylene hydrochlorination |
Language | English |
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Snippet | The catalysts comprising the main active compounds of Sn-Nx were synthesized using trichlorophenylstannane ((C
H
)Cl
Sn), nitrogen carbon-dots (NCDs), and... The catalysts comprising the main active compounds of Sn-Nx were synthesized using trichlorophenylstannane ((C6H5)Cl3Sn), nitrogen carbon-dots (NCDs), and... The catalysts comprising the main active compounds of Sn-Nx were synthesized using trichlorophenylstannane ((C 6 H 5 )Cl 3 Sn), nitrogen carbon-dots (NCDs),... |
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StartPage | 1463 |
Title | Acetylene hydrochlorination over tin nitrogen based catalysts: effect of nitrogen carbon-dots as nitrogen precursor |
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