顺酐 meaning in English
- 顺: in the same direct ...
- 酐: anhydride
- 苯氧化制顺酐催化剂: benzene oxidation ...
- - test method for color of maleic anhydride and phthalic anhydride in the molten state and after heating platinum - cobalt scale
- With phosphato - tungstic acid as catalyst and phosphoric acid as dehydrant , n - phenylmaleimide was prepared from aniline and maleic anhydride by two - step method . the yield was 88 . 7 % and the purity was 98 . 2 %
以顺酐和苯胺为原料,磷钨酸作催化剂,磷酸作脱水剂,采用两步法制得n -苯基马来酰亚胺,得到最佳反应工艺条件,产品收率为88 . 7 % ,纯度为98 . 2 % (质量分数) 。
- Maleic anhydride is a white needle - like , briquette or flaky crystalline with irritant odour and sour , inflammable and sublimating . it can be freely dissolved in water to form maleic acid . it has a specific density of 1 . 480 , a melting point of 52 . 85
- This paper present the investigation of catalytic activities of strong acid cation exchange resin , perfluoro sulfonic acid resin and solid super acid to the esterification of maleic anhydride . the optimal technical condition were found using d001 - cc cation resin
- In this paper some discussion of relative researchs about maleic anhydride synthesis and it ' s ramification are given . these researchs are of important significance for our chemical industry to get out of difficult position and have a long - term development