Homogeneous catalysis heterogeneous catalysis is the petrochemical alkylation process, where the liquid reactants are immiscible with a solution containing the catalyst. Heterogeneous catalysis offers the advantage that products are readily separated from the catalyst, and heterogeneous catalysts are often more stable and degrade much slower than homogeneous catalysts. However, heterogeneous catalysts are difficult to study, so their reaction mechanisms are often unknown. Enzymes possess properties of both homogeneous and heterogeneous catalysts. As such, they are usually regarded as a third, separate category of catalyst. Homogeneous catalysis In chemistry, homogeneous catalysis is catalysis in a solution by a soluble catalyst. Homogeneous catalysis refers
A Woman of Substance (miniseries) Series, and Deborah Kerr was nominated for Outstanding Supporting Actress in a Limited Series or Special. Barbara Taylor-Bradford's sequel, "Hold the Dream", was produced as an eponymous miniseries in 1986, again starring Deborah Kerr and Jenny Seagrove, though Seagrove now played the role of Paula. A second sequel, "To Be the Best", was adapted in 1992 and starred Lindsay Wagner as Paula. A Woman of Substance (miniseries) A Woman of Substance is a British-American three-part television drama miniseries, produced in 1984. It is based on the 1979 novel "A Woman of Substance" by the author Barbara Taylor Bradford. In 1970,