Negative Carbon Emission Acetylene Production: A Breakthrough Based on Barium Looping

Traditional acetylene production relies on the energy-intensive calcium carbide method, producing significant carbon dioxide and waste slag. This study proposes a novel green acetylene production process based on barium looping, using barium carbide instead of calcium carbide as an intermediate. The research finds that barium carbide formation exhibits faster kinetics, lower formation temperature, and no carbon dioxide release. Lab-scale barium recovery experiments validate the feasibility of this process, achieving negative carbon emissions. This environmentally friendly process is easily scalable and promises to be a key chemical platform for sustainable development, offering new insights into carbon-to-chemicals conversion.