Effect of Boron Trioxide on Coke's Inner Carbon Solution Loss Reaction

Boron Trioxide (B2O3) was adsorbed on coke through boric acid (H3BO3) solution, of which the concentration was 0.1%, 0.5%, 1.0%, 2.0% respectively. The existence form and distribution of boron (B) adsorbed on coke were characterized by X-Ray powder diffraction (XRD), X - ray photoelectron spectroscopy (XPS), scanning electron microscope (SEM) and Inductive coupled plasma (ICP), effect of B2O3 adsorbed on coke was investigated by carbon solution loss reaction (CSLR) under the condition of the same weight loss. Results show that: H3BO3 changes into B2O3 after adsorption treatment, and is adsorbed on coke successfully; B2O3 exhibits negative effect on coke CSLR; with the solution concentration increases, the negative effect is strengthened, and coke's inner reactivity becomes severer, which is not beneficial for coke strength.