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Wilhelm Ostwald

A portrait of Wilhelm Ostwald, a Baltic-German chemist with gray hair and a full beard, wearing glasses and a dark suit, set against a dark background.

Baltic-German chemist (1853–1932). Won the 1909 Nobel for foundational work on catalysis, chemical equilibria, and reaction rates — the theoretical scaffolding on which all later industrial catalysis was built. Also developed the Ostwald process for turning ammonia into nitric acid, still the standard industrial route to fertiliser and explosives. A polymath who in later life turned to philosophy, colour theory, and the design of a universal auxiliary language.

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