AbstractThe effects of various promoted and unpromoted mixed oxide catalysts on yields and compositions of liquid organic products as measured in a small laboratory pyrolysis reactor are reported. While such small‐scale results do not accurately predict process plant yields, they provide a useful reference in preliminary economic evaluations and in planning larger‐scale tests. Therefore, on the basis of laboratory results, a commercialscale catalytic pyrolysis plant for the production of synthetic crude oil was simulated by using Aspen Plus and the economics were developed. Depending on certain assumptions, such a process could be profitable. To test the possibility of producing chemicals, a separations plant was added. Simulation results again suggested potential economic viabil