RAM Matrix Ultimate Coke Selective Bottoms Cracking Technology Summary Grace Davison's RAM matrix is a proprietary reactive alumina matrix developed to provide improved bottoms cracking over competitive catalysts.
Conventional wisdom suggests that as matrix surface area increases, bottoms yield decreases.
However, not all surface area is equal. In addition, the size of the diffusion channels plays a significant role in bottoms upgrading. In general, good bottoms upgrading requires relatively large pores to allow for proper diffusion of feed reactants to the active sites and products from the active sites. As shown in Figure 1, RAM matrix has higher pore volume than competitive catalysts in the large pore diameter range. This is the range which has proved to provide effective transport of large molecules to the active matrix sites, thereby enabling improved bottoms cracking.