Calcium carbide synthesis using a solar furnace

Electrochemical CaC2‐Mediated Conversion of Biochar to C2H2: High Carbon Efficiency and Low Contamination

“…Secondly, its carbon efficiency is low due to the formation of CO. Thirdly, carbon from natural resources often contains S and P which can also react with CaO, accompanying Reaction (1), to form CaS and Ca 3 P 2 . The latter go with Reaction (2), leading to H 2 S and PH 3 contamination in the final C 2 H 2 product [5c] . These impurities are toxic and, in particular, the existence of H 2 S in C 2 H 2 could poison the catalyst used in and hence hamper further organic synthesis from C 2 H 2 [6] .…”

The effects of the use of acetylene gas as an alternative fuel in a gasoline engine

“…Acetylene gas is formed during the decomposition of calcium carbide (CaC2) under the action of water (H2O) according to the exothermal chemical reaction. The chemical equation is as follows [11,12].…”

Calcium‐Based Sustainable Chemical Technologies for Total Carbon Recycling

“…By contrast, the use of concentrated solar radiation for carbide synthesis from lime and petroleum coke requires no significant additional electrical energy consumption . This process is based on the firing of an initial limestone–coke mixture at a power density not less than 110 W cm −2 .…”

“…By contrast, the use of concentrated solar radiation for carbide synthesis from lime andp etroleum coke requires no significant additional electrical energy consumption. [38] This process is based on the firing of an initial limestone-coke mixture at apower density not less than 110Wcm À2 .Alarge-scale reaction of this type (35 kg of initial mixture) was successfully tested, and the product was obtained in 0.3 h. All high-temperature methodsh ave as ignificant drawback:h eating starts from the edges and does not effectively reach the central portion of the reactionm ixture.U nreacted CaO and carbon contaminate the product and decreaset he yields. On as maller scale, heatingt he reaction in a2 .45GHz microwaveo ven leads to atotally different mechanism ( Figure 7).…”