结果表明，催化剂失活的主要原因是糠醛加氢过程中生成的高聚物附着在催化剂的活性表面。

The results showed that adhesion of higher polymers formed during the hydrogenation process onto surface of the catalyst was the main cause for deactivation of the catalyst.

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对催化剂的活性表面高聚物的有效去除是催化剂再生的关键。该类催化剂主要活性成分为铜，常规燃烧方法会使催化剂活性损失殆尽。

Since the main active component is copper, removal of the polymers by traditional burning method might cause complete loss of the activity.

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目的制备阿霉素高聚物胶束并研究其体外抗肿瘤活性。

OBJECTIVE To prepare doxorubicin loaded N-octyl-N'-succinyl chitosan micelles and study the in vitro anti-tumor activity.

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