A Method For Determining the Amount of Asphaltene Adsorbed To Metal Surfaces Upon Exposure To Solvents

Quartz crystal microbalance (qcm) has been used to investigating the effect of different factors such as concentration, n-hexane ratio on the asphaltene adsorption on a metal surface. different toluene-asphaltene solution at concentrations of 100 to 2000 mg /l have been used for asphaltene adsorption experiments on metal and surfaces of carbonate rock. experimental results showed that the asphaltene adsorption on gold surface has increased by increase in concentration of asphaltene and ratio of n-hexane to toluene. adsorption of asphaltene is extremely dependent on the nature of the solvent, so that when the hexane/toluene ratio increases, absorption of asphaltene from the solution increases to a certain ratio and then decreases