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Researchers at the Catalytic Processes Laboratory at the University of Buenos Aires in Argentina have created a technique that converts ethyl alcohol into hydrogen. The process, in which ethyl alcohol is derived from vegetable sources such as sugar cane and cereals, is potentially far cheaper than obtaining hydrogen through electrolysis, according to a report from the Spanish-based EFE news agency.
'Hydrogen is usually obtained from natural gas, a process that gives off CO 2 ,' explains lab director, Miguel Laborde. 'It is also obtained from water, through electrolysis, but it is very expensive.' While the production of hydrogen from alcohol still generates CO 2 , albeit at a much lower level, 'it is carbon that was already in the biosphere, because it comes from the vegetables used to manufacture alcohol,' adds Laborde. 'Therefore, it does not add CO 2 to the atmosphere.'
The new technique should be more affordable because drivers would only need to fill up with alcohol at gasoline stations, rather than relying on separate hydrogen production, compression, storage and sales facilities. Ethanol is also advantageous in that it can be manufactured wherever the appropriate raw materials can be grown.
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Herewith we provide the reply to the comments raised by Lars Angenent et al.
## Abstract The ^1^H, ^13^C and ^15^N NMR studies have shown that the __E__ and __Z__ isomers of pyrrole‐2‐carbaldehyde oxime adopt preferable conformation with the __syn__ orientation of the oxime group with respect to the pyrrole ring. The __syn__ conformation of __E__ and __Z__ isomers of pyrrol