BYK’s FULCAT product range provides heterogeneous clay catalysts, with and without acid modification. Made from sustainably sourced natural clays, the FULCAT catalyst range is designed to be reused and recycled, providing an efficient and environmentally friendly solution for a range of chemistries from pharmaceuticals to commodity chemicals. Covering Brønsted and Lewis acidity, FULCAT catalysts have been optimized to provide excellent activity in such reactions as Friedel-Crafts alkylation, siloxane polymerization, dimerization, isomerization, dehydration, and more.