Damien Hirst was a shark in formaldehyde in a vitrine, and sold for £50,000. The shark had been caught by a commissioned fisherman in Australia and had cost £6,000. The exhibition also included "In a Thousand Years". As a result of the show, Hirst was nominated for that year's Turner Prize, but it was awarded to Grenville Davey. Hirst's first major international presentation was in the Venice Biennale in 1993 with the work, "Mother and Child Divided", a cow and a calf cut into sections and exhibited in a series of separate vitrines. He curated the show "Some Went Mad, Some Ran
Formaldehyde equation: The silver-based catalyst usually operates at a higher temperature, about 650 °C. Two chemical reactions on it simultaneously produce formaldehyde: that shown above and the dehydrogenation reaction: In principle, formaldehyde could be generated by oxidation of methane, but this route is not industrially viable because the methanol is more easily oxidized than methane. Formaldehyde is a building block in the synthesis of many other compounds of specialised and industrial significance. It exhibits most of the chemical properties of other aldehydes but is more reactive. Formaldehyde, unlike most aldehydes, oligomerizes spontaneously. The trimer is trioxane and the polymer is called