نتایج جستجو برای: polymer supported catalyst
تعداد نتایج: 324270 فیلتر نتایج به سال:
Two late transition metal catalysts based on 2,6-bis(imino)pyridine iron(II) were synthesized by introducing methyl substitution (catalyst A) and t-Butyl substitution (catalyst B) at the ortho position of the aryl rings of the ligand. Comparative ethylene polymerizations using the catalysts showed quiet different behaviors. The activity of catalyst A was higher than that of catalyst B in all of...
a new model based on a combination of the polymeric multigrain and multilayer models has been developed to predict the polymerization rate, particle growth, morphology, effective parameters on broadening of the molecular weight distribution, number and weight average of the molecular weight, isotacticity index and bulk density of polymer. mathematical correlations and the kinetics used in this ...
A single-Rh-site catalyst (Rh-TPISP) that was ionically-embedded on a P(V) quaternary phosphonium porous polymer evaluated for heterogeneous ethanol carbonylation. The [Rh(CO)I3]2– unit proposed to be the active center of Rh-TPISP carbonylation reaction based detailed Rh L3-edge X-ray absorption near edge structure (XANES), photoelectron spectroscopy (XPS), and extended fine (EXAFS) analyses. A...
نمودار تعداد نتایج جستجو در هر سال
با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید