Determination of the contribution of penetration, diffusion and alkali consumption in the impregnation of Eucalyptus grandis chips.

ABSTRACT The influence of impregnation conditions on the phenomena involved in the impregnation of Eucalyptus grandis chips was studied with the aid of a new impregnation method. When pre-steaming was used, 30 minutes of penetration time was sufficient to achieve the final degree of penetration (over 95%) with white and black liquor. An impregnation time of 15 minutes was found…

Automating the NMR analysis of base oils: Finding naphthene signals.

ABSTRACT Base oils, as many other oil products, are mainly analyzed with dedicated techniques designed to characterize the performance of these products in their intended use, along with suitable analysis techniques such as MS or GC to provide basic chemical information about the constituents. However, the physicochemical properties of base oils are direct result of the chemical structures of the…