Influence of modification with acidic, amphiprotic and basic oxides on alkylation properties of HY molecular sieve was investigated.
考察了用酸性、两性和碱性氧化物改性HY分子筛对烷基化反应性能的影响。
2
The method for removing nitrogen oxides in the effluent gas from manufacturing nitric acid by using acidic urea solution as an absorbent to absorb the nitrogen oxides is introduced.
介绍用酸性尿素溶液作吸收剂， 吸收硝酸尾气中氮氧化物的净化方法。
3
Sulfur dioxide and nitrogen oxides also cause acidic precipitation, commonly called acid rain.