ABSTRACT
The constant demand for hydrocarbon products such as liquid fuels is one of the major driving forces behind the petroleum industry. However, the other driving force is a major group of hydrocarbon products (petrochemicals) that are the basis of a major industry. There is a myriad of products that have evolved through the short life of the petroleum industry, either as bulk fractions or as single hydrocarbon products (Tables 1.1 and 1.2). And the complexities of product composition have matched the evolution of the products. In fact, it is the complexity of product composition that has served the industry well and, at the same time, had an adverse effect on product use.
