In 2003, global production was about 1 million tonnes. The main production method is the oxidation of ethylene via the Wacker process:
- 2 CH2=CH2 + O2 → 2 CH3CHO
Alternatively, hydration of acetylene, catalyzed by mercury salts gives ethenol, which tautomerizes to acetaldehyde. This industrial route was dominant prior to the Wacker process When smaller capacities are required it can also be prepared via dehydrogenation or partial oxidation combined with dehydrogenation. Some acetaldehyde forms upon hydrogenation of CO, but this method is not used commercially.
Read more about this topic: Acetaldehyde
Other articles related to "production":
... to buy things is a way of measuring production ... Note that if you knit yourself a sweater, it is production but does not get counted as GDP because it is never sold ... such as child-rearing (generally unpaid) as production, GDP ceases to be an accurate indicator of production ...
... The relationship between design and production is one of planning and executing ... In contrast, production involves a routine or pre-planned process ... A design may also be a mere plan that does not include a production or engineering process, although a working knowledge of such processes is usually expected of designers ...
... Kaman was awarded a contract for four prototype and 12 production HU2K-1 helicopters in late 1957 ... With no follow-on orders, Kaman ended production in the late 1960s after delivering 184 SH-2s to the US Navy although production would be later restarted in 1971 to ... A significant factor in the reopening of the production line was that the Navy's Sikorsky SH-60 Sea Hawk, which was newer and more capable in anti-submarine operations ...
Famous quotes containing the word production:
“Perestroika basically is creating material incentives for the individual. Some of the comrades deny that, but I cant see it any other way. In that sense human nature kinda goes backwards. Its a step backwards. You have to realize the people werent quite ready for a socialist production system.”
—Gus Hall (b. 1910)
“The growing of food and the growing of children are both vital to the familys survival.... Who would dare make the judgment that holding your youngest baby on your lap is less important than weeding a few more yards in the maize field? Yet this is the judgment our society makes constantly. Production of autos, canned soup, advertising copy is important. Houseworkcleaning, feeding, and caringis unimportant.”
—Debbie Taylor (20th century)
“From the war of nature, from famine and death, the most exalted object which we are capable of conceiving, namely, the production of the higher animals, directly follows. There is grandeur in this view of life, with its several powers, having been breathed into a few forms or into one; and that, whilst this planet has gone cycling on according to the fixed law of gravity, from so simple a beginning endless forms most beautiful and most wonderful have been, and are being, evolved.”
—Charles Darwin (18091882)