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Friedrich Wohler

Picture of Friedrich Wohler

Date of Birth: 07/31/1800

Age: 82

Place of birth: Esherheym

Citizenship: Germany

Background

Friedrich Wohler (1800-1882) - a German chemist, was born in Esherheyme near Frankfurt am Main in the family of eminent burgher. At the insistence of his parents, he graduated from the Medical Faculty of the University of Marburg, and in 1823 received the title of Doctor of Medicine - surgeon.

But Wohler early years attracted chemistry. Another first-year student in the chemical laboratory of the University he prepared by reacting cyanide iodaICN dry potassium cyanide with iodine. Surgeon, he did not, and he urged the Swedish chemist Berzelius give him the opportunity to work as a laboratory assistant under his leadership.

Wohler had a calm balanced character. With the German chemist Liebig he had a long-term friendship. Liebig later wrote: "Without envy and jealousy, we walked hand in hand in our common way, when one needed vpomoschi, another was ready to give it to him."

Wohler was the first in its pure form many materials: aluminum, amorphous boron, beryllium, yttrium, silicon carbide SiC and calcium carbide CaC2, and silane SiH4 trichlorosilane SiHCl3. He proposed a new method of preparing by heating white phosphorus P4 calcium orthophosphate mixture of Ca3 (PO4) 2, coal and sand (silicon dioxide) SiO2. This method is still used in almost all industrial countries.

But the most famous synthesis Wohler was the acquisition of urea (NH2) 2CO (urea) by evaporation of a solution of ammonium cyanate NH4NCO - organic matter from inorganic.

Wohler was married twice. His first wife died after two years of marriage. From his second marriage to Julia Pfeiffer he had four daughters, one of whom, Emilia, became his secretary and biographer.