HCOOH disproportionation to MeOH promoted by molybdenum PNP complexes

Abstract

Molybdenum (0) complexes with aliphatic aminophosphine pincer ligands have been prepared which are competent for the disproportionation of formic acid, thus representing the first example so far reported of non-noble...

Catalytic reduction of carbon dioxide by a zinc hydride compound, [Tptm]ZnH, and conversion to the methanol level

“…Therefore, it is significant that we report that [Tptm]ZnH is indeed a catalyst for the reduction of HCO 2 Si(OEt) 3 to the methanol level (Scheme 3). 32,33 In this regard, while the initial methoxysilane product is MeOSi(OEt) 3 , 34 the latter undergoes redistribution to form (MeO) x Si(OEt) 4− x , as previously noted for such compounds. 35,36 In addition, the zinc system also catalyzes the reduction of HCO 2 Si(OMe) 3 by (MeO) 3 SiH to afford Si(OMe) 4 .…”

Homogeneous Hydrogenation of CO2 and CO to Methanol: The Renaissance of Low‐Temperature Catalysis in the Context of the Methanol Economy

“…The field encompassing formic acid disproportionation under aqueous conditions to CH 3 OH and CO 2 has been explored previously. [134] In 2016, this concept was extended by Himeda, Laurenczy and co‐workers to establish a novel CO 2 ‐to‐methanol process using an iridium‐based complex ( Ir‐2 ), which could catalyze both the hydrogenation (of CO 2 ) and disproportionation (of HCOOH) at a notably low temperature of 70 °C (Figure 18 ). [135] The transformation required highly acidic medium (2.5 m H 2 SO 4 ) leading to a TON of about 8 for methanol after 50 h. With a wide scope for further improvement in the catalytic activities, the Ir‐based system is the only viable neat aqueous process reported to date for CO 2 to methanol.…”

Homogeneous Hydrogenation of CO2 and CO to Methanol: The Renaissance of Low‐Temperature Catalysis in the Context of the Methanol Economy

“…The field encompassing formic acid disproportionation under aqueous conditions to CH 3 OH and CO 2 has been explored previously. [134] In 2016, this concept was extended by Himeda, Laurenczy and coworkers to establish a novel CO 2 -to-methanol process using an iridium-based complex (Ir-2), which could catalyze both the hydrogenation (of CO 2 ) and disproportionation (of HCOOH) at a notably low temperature of 70 °C (Figure 18). [135] The transformation required highly acidic medium (2.5 M H 2 SO 4 ) leading to a TON of about 8 for methanol after 50 h. With a wide scope for further improvement in the catalytic activities, the Ir-based system is the only viable neat aqueous process reported to date for CO 2 to methanol.…”

“…However, such a route has rarely been achieved in the domain of homogeneous catalysis. The field encompassing formic acid disproportionation under aqueous conditions to CH 3 OH and CO 2 has been explored previously [134] . In 2016, this concept was extended by Himeda, Laurenczy and co‐workers to establish a novel CO 2 ‐to‐methanol process using an iridium‐based complex ( Ir‐2 ), which could catalyze both the hydrogenation (of CO 2 ) and disproportionation (of HCOOH) at a notably low temperature of 70 °C (Figure 18).…”