Acetylene hydrochlorination over tin nitrogen based catalysts: effect of nitrogen carbondotsas nitrogen precursor

Authors

YIBO WU
FUXIANG LI
QINGBIN LI
SONGTIAN LI
GANQING ZHAO
XUERONG SUN
PEISONG LIU
GUOXV HE
YONGJUN HAN
LIPING CHENG
SHIYING LUO

DOI

10.3906/kim-2102-67

Abstract

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 (C4H5)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.

Keywords

Trichlorophenylstannane, nitrogen carbon-dots, vinyl chloride, acetylene hydrochlorination

First Page

1463

Last Page

1475

Recommended Citation

WU, YIBO; LI, FUXIANG; LI, QINGBIN; LI, SONGTIAN; ZHAO, GANQING; SUN, XUERONG; LIU, PEISONG; HE, GUOXV; HAN, YONGJUN; CHENG, LIPING; and LUO, SHIYING (2021) "Acetylene hydrochlorination over tin nitrogen based catalysts: effect of nitrogen carbondotsas nitrogen precursor," Turkish Journal of Chemistry: Vol. 45: No. 5, Article 13. https://doi.org/10.3906/kim-2102-67
Available at: https://journals.tubitak.gov.tr/chem/vol45/iss5/13