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Homogeneous catalysis
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<p>In chemistry, homogeneous catalysis is <a href="/facts/Catalysis/LPBS7TQC">catalysis</a> where the catalyst is in same phase as reactants, principally by a soluble catalyst in a solution. In contrast, <a href="/facts/Heterogeneous_catalysis/ju7E0bab">heterogeneous catalysis</a> describes processes where the catalysts and substrate are in distinct phases, typically solid and gas, respectively. The term is used almost exclusively to describe solutions and implies catalysis by <a href="/facts/Organometallic_compound/bhqFz2P0">organometallic compounds</a>. Homogeneous catalysis is an established technology that continues to evolve. An illustrative major application is the production of <a href="/facts/Acetic_acid/uyBKA2Pd">acetic acid</a>. Enzymes are examples of homogeneous catalysts. </p>