ALKYLATION OF ISOBUTANE WITH LIGHT OLEFINS - YIELDS OF ALKYLATES FOR DIFFERENT OLEFINS

For alkylation of isobutane with C-3-C-5 olefins using sulfuric acid a s the catalyst, the yields of alkylates with different olefins are com pared as the operating conditions are changed. The results of recent p ilot plant experiments with propylene, C-4 olefins, and C-5 olefins pe rmit such comparisons. The yields expressed as weight of alkylate prod uced per 100 wt of olefin consumed varied from about 201:100 to 220:10 0. Weight ratios of the isobutane consumed per olefin consumed vary fr om about 101:100 to 120:100. Differences of yield values are explained by the changes in the overall chemistry. The procedure employed to ca lculate yields with good accuracy is based on the analysis of the alky late and the amount of conjunct polymers produced. Based on literature data, yields are also reported for alkylations using HF as the cataly st.