Can not be washed with concentrated sulfuric acid.
不能用浓硫酸洗涤。
Two processes with concentrated sulfuric acid recently appeared are reviewed.
对新近出现的两个浓硫酸水解工艺进行述评。
Compared with conventional concentrated sulfuric acid catalyst, CC-1 featured much higher selectivity and easier operation.
与传统的浓硫酸催化剂相比，CC - 1催化剂具有更优异的选择性，操作更简便。
The composition of the catalysis system containing concentrated sulfuric acid and its regeneration method are also investigated.
对浓硫酸催化体系的组成、再生方法也进行了探索。
A biomass hydrolyzing process for producing glucose was investigated, through concentrated sulfuric acid hydrolysis of wood chips.
以木屑为研究对象，进行浓硫酸水解，得到产物单糖。
The results show that the new steel is much better than RS-2 in corrosion resistance to medium temperature concentrated sulfuric acid.
结果表明，新钢种在中温浓硫酸中，具有比RS-2优越得多的耐蚀性能。
Thermal and thermo-oxidative degradation of chitin with ammonium nitrate, ammonium sulfate and concentrated sulfuric acid were studied.
讨论了硝酸铵、硫酸铵和浓硫酸对自制甲壳素热降解和热氧化降解过程的影响。
Bicyclic fused aziridines can generate regioselective ring opening reaction with various alcohols, catalyzed by slight concentrated sulfuric acid.
用醇作溶剂、微量的浓硫酸作催化剂，稠合双环氮杂环丙烷衍生物可发生区域选择性氮杂环开环反应。
Preparation of methyl acetate from methanol and acetic acid by reactive rectification was investigated with concentrated sulfuric acid as catalyst.
在中试反应精馏塔中以浓硫酸为催化剂进行了醋酸与甲醇反应制备醋酸甲酯的试验。
The result showed that if the waste slag compose of 10% fluid and react with low concentrated sulfuric acid, 90% dihydrate plaster would be prepared.
实验表明，将废渣配成10％浓度的浆液与低浓度废硫酸进行反应，可制造含量达90％以上的优质二水石膏。
By the use of the new nitrating agent, the use of concentrated sulfuric acid was avoided and the reaction was environmental friendly with high atom economy.
该方法通过改变硝化剂，不仅成功地避免了浓硫酸的使用，而且提高了原子经济性，具有良好的环境效益。
The bamboo residues could be liquefied to be biopolyol in the mixed solvent of polyether alcohol and crude glycerol under the catalysis of concentrated sulfuric acid.
在硫酸的催化作用下，竹废料在由聚醚多元醇和粗甘油组成的混合液化剂中可被液化成多羟基化合物。
Cyclohexene was synthesized by dehydration of cyclohexanol using zirconium sulfate or potassium hydro - gen sulfate as catalyst instead of concentrated sulfuric acid.
用硫酸锆、硫酸氢钾分别代替浓硫酸，催化环己醇脱水合成了环己烯，主要考察了催化剂用量、分馏反应时间对产物收率的影响。
N-octyl bromide was synthesized by hydrobromic method in which took n-octanol and industrial waste hydrobromic acid (48%) as materials, concentrated sulfuric acid as a catalyst.
本实验采用氢溴酸法，用浓硫酸作催化剂，以正辛醇、工业废氢溴酸(48%)及浓硫酸为原料，合成1 -溴代正辛烷。
Preparation of TFAE through reactive distillation process had been researched, with trifluoroacetic acid and ethanol as raw materials, concentrated sulfuric acid as the catalyst.
以三氟乙酸、乙醇为原料，以浓硫酸为催化剂，对反应精馏法制备三氟乙酸乙酯的过程进行了实验研究。
The method comprises the following steps: the entrainer and concentrated sulfuric acid used as a catalyst are added into an esterification kettle at one time, and supplemented intermittently;
本发明方法包括夹带剂和催化剂浓硫酸一次性加入酯化釜，间歇补充；
The phosphorus content of phytin was determined in molybdate-antimony-scandium color agent after it was digested by concentrated sulfuric acid and perchlorate, with its deviation of no over 5%.
浓硫酸和高氯酸消解后，用钼-锑-钪复合显色剂测定植酸钙中的磷含量，偏差不超过5%；
The experimental results show: firstly, the concentration of the concentrated sulfuric acid increases with increased inlet air flux, increased intet air temperature and decreased inlet liquid flux;
实验研究表明：硫酸浓缩液浓度随空气进口温度的升高、空气进口流量的增大以及稀硫酸进口流量的减小而增大；
The extraction raffinate can be concentrated by one-stage evaporation to obtain sulfuric acid with 80% of mass fraction.
萃余液经一次性蒸发浓缩，可得到质量分数80%以上的硫酸。
The extraction raffinate can be concentrated by one-stage evaporation to obtain sulfuric acid with 80% of mass fraction.
萃余液经一次性蒸发浓缩，可得到质量分数80%以上的硫酸。
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