Abstract: A combination process is provided for residua demetalation and desulfurization and resulting coke gasification which comprises contacting said residua with a porous refractory oxide in the absence of added hydrogen, at a temperature of from greater than 700.degree.F to about 1100.degree.F and a refractory oxide to oil weight ratio of from about 0.1 to about 5 to produce upgraded residua of cracking feed quality, and contacting said refractory oxide after an amount of coke has formed thereon with steam and a free oxygen containing gas in which the mole ratio of steam to oxygen is from about 3 to about 5, at a temperature of from about 1000.degree.F to about 1500.degree.F to produce producer gas and regenerated porous refractory oxide for further contacting with residua.

Abstract: Improved catalytic hydrodewaxing of gas oil fractions using as the catalyst a high silica to alumina ratio crystalline aluminosilicate zeolite having shape selective properties for normal and mono methyl configuration paraffins, by using as the catalyst such a zeolite having a multi-valent transition metal and a Group VIII noble metal incorporated therewith.

Abstract: In the dewaxing of gas oils for the purpose of pour point reduction by catalytic hydrodewaxing using a catalyst comprising a crystalline aluminosilicate zeolite having a high silica to alumina ratio of at least 12 and a constraint index of about 1 to 12, carrying out the process at elevated temperature and pressure, including providing a hydrogen atmosphere in a preferred process configuration, the improvement of using a catalyst comprising said zeolite in microcrystalline from having a maximum crystal size of about 0.05 microns (M); and of operating the process at low pressures of up to about 500 psig, whereby not only is the catalytic activity increased but the catalyst aging rate is decreased and the product distribution is varied such that the process does not consume hydrogen but rather produces hydrogen or is at least neutral in this respect.