yttrium

The Catalytic Activity of Naphthenate yttrium——triisobutyl aluminium——aluminium sesquichlo—ride—catalyst System in the Stereospecific polymerization of Butadiene

环烷酸钇—三异丁铝—“倍半”体系在丁二烯定向聚合中的催活性

"黑稀金:光亮的棕黑色稀土石,主要由铈、铒、钛、铀和钇构成."

"euxenite:a lustrous, blackish-brown rare-earth mineral consisting primarily of cerium , erbium, titanium, uranium, and yttrium."

The study on technical process and kinetics of PVC heat steadilizer yttrium stearate by saponifying method was carried out.

采用皂法制备了PVC热稳定剂-硬脂酸钇,并进行了动力学研究。