预硫化催化剂的表征结果表明，催化剂硫化前后孔容和比表面积变化不大。
The characterization of pre-curing catalyst show that the pore volume and specific surface area had little change after vulcanization.
总结了LS - 971脱氧保护型硫磺回收催化剂的制备、表征及活性评价情况。
The preparation, characterization and activity evaluation of LS-971 deoxygenation protection catalyst for sulfur recovery were introduced.
综述了铝氧烷的制备方法及结构表征，并对其在茂金属催化剂中的作用作了详细介绍。
This paper reviewed the preparation methods and structural characterization of aluminoxane and described in details its function in metallocene catalyst system.
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