![]() ![]() ![]() (1980), who did not confirm these findings in humans, are of importance. In view of the increased incidence of breast neoplasms in rodents exposed to VCM, the studies of Chaizze et al. Neoplasms of the respiratory tract, digestive system, lymphatic and haemopoietic system, buccal cavity, and pharynx, cardiovascular system and colon/stomach were reported to show an increased incidence in one or more studies, but to show no increase, or in some cases a decrease, in incidence in other studies. For brain cancer the association between exposure to VCM and an increased incidence was less clear because of the lower relative risk. A review of 20 epidemiological studies involving about 45,000 workers occupationally exposed to VCM showed that neoplasms of the liver showed an increase in incidence in the majority of studies. Read more about how to correctly acknowledge RSC content.There is little doubt that exposure to high levels of VCM as a consequence of occupation can result in an increased incidence of ASL. Permission is not required) please go to the Copyright If you want to reproduce the wholeĪrticle in a third-party commercial publication (excluding your thesis/dissertation for which If you are the author of this article, you do not need to request permission to reproduce figuresĪnd diagrams provided correct acknowledgement is given. Provided correct acknowledgement is given. If you are an author contributing to an RSC publication, you do not need to request permission Please go to the Copyright Clearance Center request page. ![]() To request permission to reproduce material from this article in a commercial publication, Provided that the correct acknowledgement is given and it is not used for commercial purposes. This article in other publications, without requesting further permission from the RSC, Qi,Ĭreative Commons Attribution-NonCommercial 3.0 Unported Licence. The new green, metal-free B,N-ACs with excellent catalytic efficiency make it a promising catalyst for dehydrochlorination of 1,2-DCE to produce VCM.Ĭonstruction of activated carbon-supported B 3N 3 doped carbon as metal-free catalyst for dehydrochlorination of 1,2-dichloroethane to produce vinyl chlorideĬ. The results further verified that pyridinic-N and the internal B 3N 3 play significant roles in this catalysis. The B,N-ACs deliver excellent catalytic performance, with a 1,2-DCE conversion of ∼92.0% and VCM selectivity over 99.9% at 250 ☌, significantly higher than that of the current catalysts in the industry. The result is activated carbon loaded with B 3N 3-doped carbon nanosheets on the surface due to the B 3N 3-containing arylacetylene resin grown on the surface of activated carbons. In view of the stronger electronegativity of borazine (B 3N 3) and convenience of constructing a two-dimensional structure because of the coplanarity of B 3N 3, the acetenyl group, and the benzene ring, herein, we report a novel controllable B 3N 3 doped activated carbon (B,N-ACs) synthesized using B 3N 3-containing arylacetylene resin for dehydrochlorination of 1,2-DCE. Therefore, environmentally friendly and metal-free catalysts are in high demand for green chemical processes. ![]() Dehydrochlorination of 1,2-dichloroethane (1,2-DCE) is an important oil-based way for the industrial production of vinyl chloride monomer (VCM), but has proved to be plagued by a high operating temperature and low efficiency. ![]()
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