重点介绍了代替浓硫酸催化该反应的固体酸催化剂、催化剂的失活与再生、反应器工业化的方法的进展。
The progress in the solid acid catalyst for the replacement of corrosive sulfuric acid, catalyst deactivation and regeneration, and reactor engineering was introduced.
实验结果表明，随着电流密度的增大，再生液的硫迁移比、硫酸浓缩倍率增大，电流效率降低。
It is pointed that with the increase of current density, the sulfur transfer ratio of regeneration liquor and the vitriol concentrating ratio will go up while the current efficiency will fall down.
对浓硫酸催化体系的组成、再生方法也进行了探索。
The composition of the catalysis system containing concentrated sulfuric acid and its regeneration method are also investigated.
失活树脂用摩尔分数为3.5%的硫酸溶液再生。
Deactive resin is regenerated with 3.5% (mol) sulfuric acid solution.
结论研究能有效抑制硫酸软骨素蛋白多糖的方法可能促进损伤后脊髓的再生。
Conclusion Finding a way to degrade chondroitin sulphate proteoglycans may promote regeneration of axons after spinal cord injury.
非木本木质素磺酸镁（ML）来源于造纸厂非木本原料亚硫酸盐制浆废液，属于来源丰富、无毒的可再生生物质资源。
Non-woody magnesium lignosulfonate(ML) is produced as a by-product in the sulphite non-wood pulping, which is a very abundant and innoxious biomass resource.
分别用稀硫酸清洗法及加热再生法对吸附后的脱硫脱硝剂进行再生试验研究。
The regenerable investigations were put forward by heating and acid washing for the titanium dioxide sorbent.
对再生酸经过静止分离、加热聚合浓缩、萃取等工艺净化处理后，可得到粉红色透明酸度为60%的稀硫酸和酸焦油。
After still separation, aggregation condensation by heating and extraction, the regenerative acid will turn into diluted H2SO4 of 60%, pink transparent, and acid tar.
一种对失活的催化剂进行原位再生的方法，该方法能除去掩蔽催化剂位点的硫酸钙层。
An in-situ method for regenerating a deactivated catalyst can remove a calcium sulfate layer masking active catalyst sites.
一种对失活的催化剂进行原位再生的方法，该方法能除去掩蔽催化剂位点的硫酸钙层。
An in-situ method for regenerating a deactivated catalyst can remove a calcium sulfate layer masking active catalyst sites.
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