痕量陽(yáng)離子
Ca: ≤50?mg/kgCd: ≤50?mg/kgCo: ≤50?mg/kgCu: ≤50?mg/kgFe: ≤50?mg/kgK: ≤100?mg/kgNa: ≤100?mg/kgNi: ≤50?mg/kgPb: ≤50?mg/kgZn: ≤50?mg/kg
一般描述
Cerium(III) chloride heptahydrate is a mild Lewis acid. It participates in the allylation of aldehydes. Cerium(III) chloride heptahydrate in combination with sodium iodide supported on silica gel efficiently promotes Michael-type addition. Cerium(III) chloride heptahydrate in the presence of sodium iodide acts as an efficient catalyst for the Michael addition of 1,3-dicarbonyl compounds to α,β-unsaturated ketones and α,β-unsaturated aldehydes.
應(yīng)用
Cerium(III) chloride heptahydrate was used for the preparation of undoped ceria nanoparticles. It may be used in the preparation of 2-indolyl-1-nitroalkane derivatives and CeO2-supported Co catalysts.
Sigma-Aldrich西格瑪奧德里奇(上海)貿(mào)易有限公司
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