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x- she xian ying guang san she bei jing fa ce ding cui hua lie hua cui hua ji zhong xi tu han liang
Author(s): 
Pages: 20-25+6
Year: Issue:  2
Journal: Qilu Petrochemical Technology

Keyword:  催化裂化催化剂稀土元素稀土催化剂分子筛分析结果相对强度背景元素含量标准样品相对标准偏差;
Abstract: 采用散射线背景比值法校正基体效应,人工模拟催化剂合成标准样品,粉末直接压片法用X-射线荧光测定催化裂化催化剂中稀土元素镧、铈、镨、铍、钐的含量。可测定混合稀土氧化物总量在0.4~20%(wt)的催化剂及Y型分子筛的全部样品。相对标准偏差在2%以下,与化学分析结果相吻合。
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