The petroleum refining industry has been changed by environmental regulations worldwide. Examining these effects, this book explores the use of adsorption microcalorimetry to measure acidity, acid site density, and the strength of the strongest acid sites in heterogenous catalysts. It also discusses the use of 1H-NMR to characterize the properties of a FCCU feedstock and examines pilot plant testing of catalysts and nontraditional feedstocks, maximizing and improving LCO (heating oil) production and quality, and improving FCCU operations. The final chapters examine the EPA’s attempts to encourage the refining industry to enter into voluntary consent decrees to comply with the Clean Air Act.