Researchers at the Ruhr-Universität Bochum have found a way to turn climate-damaging CO2 into an alcohol that could serve as a raw material for the chemical industry – without producing large amounts of salt waste that usually arise.
The reaction mechanism is described by the team around Timo Wendling and Prof Dr Lukas Goossen together with a colleague of the Technical University of Kaiserslautern in the journal “Chemistry – A European Journal”.
Converting carbon dioxide into an alcohol without causing unwanted waste products requires a two-step reaction. The problem: For energy reasons, the two partial reactions are virtually impossible to reconcile. In order to make the processes compatible from a thermodynamic point of view, suitable catalysts are needed to facilitate the partial reactions.
The team tested numerous substances and finally found two catalysts that had the required properties: a copper compound for the first reaction step and a rhodium/molybdenum compound for the second step. The exact composition and quantity of solvent in which the reaction took place was also crucial.
This is how the reaction works
In the first partial reaction, called carboxylation, the researchers coupled CO2 to a hydrocarbon compound. For this purpose, a proton (H+) is released from the hydrocarbon compound; the CO2 molecule docks at the vacant site, which results in an acid. The excess proton is taken up by a base. In the second step, called hydrogenation, the acid is converted to an alcohol through a transfer of protons. The base releases the previously taken proton and is thus recycled.
The team demonstrated the feasibility of this reaction with the hydrocarbon compound phenylacetylene. Further studies must show whether the principle can also be extended to other organic compounds.
With this catalyst system, the researchers achieved a recycling rate of 40 percent for the base. “This shows that the base is not destroyed during the reaction, but that the process must still be significantly improved to become usable on an industrial scale,” says Lukas Goossen, a member of the Excellence Cluster Ruhr Explores Solvation, Resolv in short. “We have taken a first important step towards harnessing CO2 for the chemical industry, which would be a great economic and environmental advantage.”
Learn more: Carbon dioxide as a raw material
The Latest on: CO2 to alcohol
via Google News
The Latest on: CO2 to alcohol
- Australia Rejects IMF Carbon Tax & Preventing 4 Million Pollution Deaths By 2030on October 14, 2019 at 8:18 pm
Carbon dioxide (CO2) emissions are a key driver of ... 4,000 avoidable Indigenous Australian deaths, (6). 5,600 Australian alcohol-related deaths, (7) 2,900 Australian suicides (circa100 being ...
- The correct making and use of binary ethanol standardson October 11, 2019 at 6:19 pm
An accurately determined alcohol concentration requires well defined prerequisites ... It is the world leader in the measurement of density, concentration and CO2 and in the field of Rheometry. Other ...
- Now rising to the top of the beer world: Foamon October 11, 2019 at 6:00 am
This slow build releases the prickly, belly-bloating bubbles of carbon dioxide, leaving a smoother, less filling brew ... The right combination of ingredients, alcohol level, equipment and serving ...
- Why Are Mosquitos Attracted to Some People More Than Others?on October 8, 2019 at 9:27 am
We all emit carbon dioxide when we breathe out. We also produce more when we’re active ... A small 2002 study looked at the effects of alcohol consumption on attractiveness to mosquitoes. The ...
- Cannabis Concentrate Global market Projection By – Dynamics, Trends, Revenue, Regional Segmented, Outlook & Forecast Till 2025on October 4, 2019 at 12:30 am
There are a variety of methods that can be used to separate cannabinoids from the plant and to concentrate them into the cannabis extract. CO2, ethanol, alcohol, butane, and water can be used as ...
- All-natural nanosponge captures CO2on September 27, 2019 at 5:00 pm
NORTHWESTERN (US) — Nanostructures made of sugar, salt, and alcohol are able to effectively detect, capture, and store carbon dioxide—and are themselves carbon-neutral. Because the porous ...
- $9.3 Billion Carbon Dioxide Markets, 2025 - Increasing Consumption in Medical, Food and Beverage, and Oil and Gas Industrieson August 28, 2019 at 2:25 pm
(MENAFN - PR Newswire) DUBLIN, Aug. 28, 2019 /PRNewswire/ -- The"Carbon Dioxide Market Analysis Report By Source (Hydrogen, Ethyl Alcohol, Ethylene Oxide, Substitute Natural Gas), By Application (Food ...
- Global Carbon Dioxide Market Analysis, 2014-2018 & Forecasts, 2019-2025 - Increasing Use Of CO2 In Enhanced Oil Recovery - ResearchAndMarkets.comon August 28, 2019 at 2:25 am
DUBLIN--(BUSINESS WIRE)--The "Carbon Dioxide Market Analysis Report By Source (Hydrogen, Ethyl Alcohol, Ethylene Oxide, Substitute Natural Gas), By Application (Food & Beverages, Oil & Gas, Medical), ...
- The global carbon dioxide market size is expected to reach USD 9.3 billion by 2025on August 19, 2019 at 8:58 am
In 2018, a total of 53 carbon pricing initiatives were implemented or are scheduled for implementation. Ethyl alcohol was largest CO2 production source and accounted for over 30.0% of the total ...
via Bing News