In:
Green Chemistry, Royal Society of Chemistry (RSC), Vol. 25, No. 21 ( 2023), p. 8584-8592
Abstract:
Various sources of carbon can be converted into acetylene (C 2 H 2 ) by using the key intermediate calcium carbide (CaC 2 ). However, the production of CaC 2 is a typical energy-intensive process, accompanied by considerable carbon dioxide (CO 2 ) emissions and a large amount of industrial solid waste. In this study, a sustainable methodology for carbon-to-acetylene and carbon monoxide (CO) co-production as well as CO 2 capture based on BaCO 3 −BaC 2 −Ba(OH) 2 −BaCO 3 looping was first established, in which BaC 2 replaced CaC 2 as the key intermediate of the carbon-to-acetylene process to generate C 2 H 2 . The kinetic behavior investigation of the BaC 2 formation indicated that the solid-phase synthesized BaC 2 is a promising intermediate for the carbon-to-acetylene conversion owing to its faster kinetics, lower formation temperature, and no carbon dioxide release compared with those observed for the CaC 2 production. Moreover, the lab-scale recovery of barium to carbide formation was conducted as the proof-of-concept to validate the coupling process of carbon-to-acetylene with CO 2 capture based on Ba looping, resulting in less carbide slag waste and negative carbon emission. The facile co-production of carbon monoxide, environmentally friendly process, and convenience of large-scale production, as well as possible independent manufacturing of fossil resources, make barium carbide-based carbon-to-C 2 H 2 -CO a promising key chemical platform for sustainable development. The proposed technology would provide new insights into the reengineering process of carbon to chemicals.
Type of Medium:
Online Resource
ISSN:
1463-9262
,
1463-9270
Language:
English
Publisher:
Royal Society of Chemistry (RSC)
Publication Date:
2023
detail.hit.zdb_id:
1485110-6
detail.hit.zdb_id:
2006274-6
