循环水总磷酸盐测定方法的改进

探讨循环冷却水总磷酸盐的测定中适宜的分解试剂及用量，选择最佳测定波长和显色条件。讨论过去测定循环冷却水中总磷酸盐分析方法用于生产现场实际测定时产生波动的原因。改进后的方法操作简便易行、快捷准确，适用于生产现场的控制分析。

胶粘剂新专利

双组份胶粘剂配方 本发明涉及的胶粘剂基础组分包括一种可聚合物、一种室温自由基聚合催化剂以及一种光引发剂。所述胶粘剂优选还含有促进剂、增韧剂、环氧以及填料等。进一步说，本发明双组份反应性胶粘剂包括的第一组分为：（i）至少一种可自由基聚合的单体，（ii）至少一种分解试剂，（iii）一种光引发剂。所包括的第二组分含有一种氧化剂，这种氧化剂在室温下可以和分解试剂反应后产生自由基，自由基能够引发以及传递自由基聚合反应。

化学实验中的禁忌

中学化学实验在化学教学中具有极重要的地位。就化学实验本身而言,有其特殊性和危险性的一面,大量国内外化学实验伤害事故已经向我们敲起了警钟。笔者从事化学教学多年,在实验教学中,有失败的教训,有成功的经验。现就中学化学实验中教师和学生常遇到的且应禁忌的一些问题,谈个人粗浅的认识。

Preparation and Commercial Application of ZHC-01 Hydrocracking Catalyst

The ZHC-01 hydrocracking catalyst, characterized by high hydrogenation activity, good selectivity for middle distillates, strong resistance to nitrogen poisoning, was prepared by co-gelling. The catalyst is not only suited to the single-stage hydrocracking process, but also to the first stage of serial hydrocracking process. In parallel with the fully loaded operation of the 1.4 Mt/a hydrocracking unit at the SINOPEC Qilu Petrochemical Company, a pilot test of the ZHC-01 catalyst was also carried out on the hydrocracking unit. The test results indicated that the activity, the yield of major target products and quality of the ZHC-01 catalyst could comply with the design requirements for the hydrocracking unit, and this catalyst could be applied in the hydrocracking unit. The commercial test results showed that the ZHC-01 catalyst, featuring good activity, stability, and flexibility in production, not only could meet the demand for producing environmentally friendly middle distillates, but could also increase the resource of optimized steam cracking feedstock.