Conversion of Carbon Dioxide into Methanol Using Cu–Zn Nanostructured Materials as Catalysts

Abstract

Nowadays, there is a growing awareness of the great environmental impact caused by the enormous amounts of carbon dioxide emitted. Several alternatives exist to solve this problem, and one of them is the hydrogenation of carbon dioxide into methanol by using nanomaterials as catalysts. The aim of this alternative is to produce a value-added chemical, such as methanol, which is a cheaply available feedstock. The development of improved materials for this conversion reaction and a deeper study of the existing ones are important for obtaining higher efficiencies in terms of yield, conversion, and methanol selectivity, in addition to allowing milder reaction conditions in terms of pressure and temperature. In this work, the performance of copper, zinc, and zinc oxide nanoparticles in supported and unsupported bimetallic systems is evaluated in order to establish a comparison among the different materials according to their efficiency. For that, a packed bed reactor operating with a continuous gas flow is used. The obtained results indicate that the use of bimetallic systems combined with porous supports, such as zeolite and activated carbon, is beneficial, thus improving the performance of unsupported materials by four times.

Cobalt Nanocomposites as Catalysts for Carbon Dioxide Conversion to Methanol

“…However, the use of porous supports is beneficial for the methanol synthesis. This is in agreement with the literature, where it has been demonstrated that the presence of porous materials improves CO 2 adsorption and the distribution of the active sites [9].…”

Rich-O-Vacancy WO3/ZrO2–Hβ with High Lewis/Brønsted Ratio: An Efficient Catalyst for the Highly Selective Synthesis of Dipropylene Glycol

“…According to the report of Horbatenko, the synthesis of DPG from PO and PG is an exothermic reaction (Δ H = −49.39 kJ·mol –1 ). Therefore, the low temperature (<140 °C) is beneficial for the PO and PG reactions . As the loading of WO 3 increased from 0 to 35 wt %, the conversion of PO on x WO 3 /20ZrO 2 –Hβ was almost unchanged at reaction temperatures below 140 °C, and the conversion of PO on x WO 3 /20ZrO 2 –Hβ increased slightly at high temperatures (>140 °C).…”

2D MXene nanocomposites: electrochemical and biomedical applications

“…Besides, it can also be applied as a fuel to form many other liquid hydrocarbon fuels and methanol, creating it economically feasible. 165,166 CO does not cause climate change directly, although its presence can affect the abundance of greenhouse gases such as CH 4 and CO.…”