您要查找的是不是:
- The optimal synthesis with polyphosphoric acid was put forward to produce high purity of phosphoric acid monoester,and its application was described. 介绍了磷酸单酯的各种合成工艺路线,并比较了它们的优缺点,提出了聚磷酸法是合成高纯度磷酸单酯的最佳路线。
- Ammonium persulfate and sulfuric acid were used to turn completely the polyphosphoric acid into orthophosphoric radicals, which were then determined by spectrophotometry. 可用过硫酸铵和硫酸将多聚磷酸全部转化成正磷酸根,再用分光光度法测定其质量分数。
- WT5"BZ]Diindanone dibenzo 24 Crown 8 has been synthesized. on the conditions of polyphosphoric acid(PPA) as catalyst and solvent,acrylic acid as acylating agent,dibenzo 24 crown 8 being acylated. 以多聚磷酸 (PPA)为催化剂和反应溶剂 ,丙烯酸为酰化剂 ,对二苯并 -2 4 -冠 -8进行酰化 ,成功地合成了双茚满酮型二苯并 -2 4 -冠 -8。
- Preparation of PBO was carried out by polymerization of salts that contained 4,6-diamino resorcinol dihydrochloride(DAR) and terephthalic acid(TPA) in polyphosphoric acid(PPA) and P2O5. 以4,6-二氨基间苯二酚盐酸盐(DAR)和对苯二甲酸(TPA)制成复合盐,再以多聚磷酸为溶剂,添加五氧化二磷,制备出PBO聚合物。
- The paper shows the ideal synthetic condition for preparing the novel amphoteric surfactant of monoalkyl phosphate by long-chain fatty acid, diethanolamine and polyphosphoric acid. 本文研究了以脂肪酸、二乙醇胺、聚磷酸为原料合成一种新型的两性磷酸酯盐表面活性剂的方法。
- WT5”BZ]Diindanone dibenzo 24 Crown 8 has been synthesized. on the conditions of polyphosphoric acid(PPA) as catalyst and solvent,acrylic acid as acylating agent,dibenzo 24 crown 8 being acylated. 以多聚磷酸(PPA)为催化剂和反应溶剂,丙烯酸为酰化剂,对二苯并-24-冠-8进行酰化,成功地合成了双茚满酮型二苯并-24-冠-8。收藏指正
- Considering the low corrosiveness of polyphosphoric acid to the stainless steel,the combustion chamber,which was made of stainless steel without inner lier,was used in the two-step method process. 利用多聚磷酸对不锈钢的低腐蚀特性,在二步法工艺中采用无衬里不锈钢燃磷塔。
- a salt or ester of polyphosphoric acid. 多磷酸形成的一种盐或酯。
- Liquid Crystalline of Cellulose in Polyphosphoric Acid 纤维素在多聚磷酸中的液晶性
- Keywords thiabendazole;polyphosphoric acid;synthesis; 噻苯咪唑;多聚磷酸;合成;
- Keywords crown ehter;polyphosphoric acid (PPA);acylation;indanone; 冠醚;多聚磷酸;酰化;茚满酮;
- Keywords crown ether;acylation;indanone;polyphosphoric acid (PPA); 冠醚;酰化;茚满酮;多聚磷酸(PPA);
- Keywords cyclopentenone;polyphosphoric acid;rearrangement;Grignard reaction; 环戊烯酮;多聚磷酸;重排;格氏反应;
- Keywords polyphosphoric acid;hexadecanol;alkyl phosphate;alkyl monophosphate; 多聚磷酸;十六醇;磷酸酯;单酯;
- He gave me a taste of his acid wit. 他让我尝到了他敏锐尖刻之机智的滋味。
- Acid irritates the stomach lining. 酸能刺激胃黏膜。
- Acid had pitted the surface of the silver. 酸把银器的表面腐蚀了。
- I am doing an experiment of neutralizing acid. 我在做一个中和酸的实验。
- Can Jones beat Smith? That's the acid test. 琼斯能击败史密斯吗?那是个严峻的考验。
- Development on the Synthesis of Preservative for Food with Polyphosphoric Acid as Solvent 多聚磷酸为助剂合成食品保鲜剂