Homogeneous catalysis Homogeneous catalysis In chemistry, homogeneous catalysis is catalysis in a solution by a soluble catalyst. Homogeneous catalysis refers to catalytic reactions where the catalyst is in the same phase as the reactants. Homogeneous catalysis applies to reactions in the gas phase and even in solids. Heterogeneous catalysis is the alternative to homogeneous catalysis, where the catalysis occurs at the interface of two phases, typically gas-solid. The term is used almost exclusively to describe solutions and often implies catalysis by organometallic compounds. The area is one of intense research and many practical applications, e.g., the production of acetic acid. Enzymes are
This Is Only a Test had similar criticisms, saying of "Excuse Me, Coach" that "I'm not sure what they were thinking, and I'm not sure I want to know", and calling the spoken-word verses in "Diary of a Teen Tragedy" "downright cringeworthy": "The reality remains that the Caterer brothers are not high schoolers. Hearing a man in his late 30s sing about how he can't get a prom date is a little off-putting." However, he called these "small complaints", concluding that "Aside from a couple blunders, "This Is Only a Test" is a thoroughly enjoyable pop-rock album. At a brisk 10 songs totaling less than