Direct synthesis of dimethyl carbonate on H3PO4 modified V2O5

Direct synthesis of dimethyl carbonate from methanol and carbon dioxide using heteropolyoxometalates: the effects of cation and addenda atoms

“…As expected, the conversion of methanol increases with increasing temperature. This result is in agreement with that of Wu et al [17]. As for the product selectivities, it can be seen from Table 4, that a relatively high temperature (80°C) was favorable to the production of DMC.…”

“…The selectivity of the reaction for DMC production decreases from 73.57 to 41.51% as the temperature increases from 80 to 100°C, whereas the selectivity for MF and DMM increases from 7.23 to 34.97% and from 5.90 to 23.49%, respectively. The increase in DMM production can be attributed to the higher temperature, leading to a decrease in carbon dioxide adsorbed on the catalysts [17].…”

“…However, DMC yield by this route is relatively low (about 5%) due to the fact that CO 2 is highly thermodynamically stable and kinetically inert and due to the deactivation of catalysts induced by water formation in the reaction process [16,17]. Therefore, the removal of water from the reaction system and the activation of CO 2 are two major obstacles in the direct synthesis of DMC from methanol and CO 2 .…”

Research Progress in the Direct Synthesis of Dimethyl Carbonate from CO2 and Methanol

“…As a result, the activity was improved significantly. The promoting effect of H 3 PO 4 was also observed on V 2 O 5 and CeO 2 catalysts [36,37]. The methanol conversion and DMC selectivity increased with the P/V value increasing when H 3 PO 4 content was lower (P/V20.20).…”

Carbon nanotubes supported Cu–Ni bimetallic catalysts and their properties for the direct synthesis of dimethyl carbonate from methanol and carbon dioxide

“…Therefore, direct synthesis of DMC from CH 3 OH and CO 2 is highly desired since such an approach is environmentally benign by nature [7]. To date, a number of catalysts have been reported to be effective in this reaction, including organometallic compounds [8], metal tetra-alkoxides [9], K 2 CO 3 [10], ZrO 2 [11,12], H 3 PW 12 O 4 -ZrO 2 [13], H 3 PO 4 -V 2 O 5 [14] and Cu-Ni/VSO [15]. However, the yield of DMC obtained from one-step synthesis from CH 3 OH and CO 2 is still very low.…”