酮縮醇 的英文怎麼說
中文拼音 [tóngsuōchún]
酮縮醇
英文
ketal-
Catalytic synthesis of butanone glycol ketal with phosphowolframic acid
磷鎢酸催化合成丁酮乙二醇縮酮The device serves for distillation of vegetable herbal medicine 、 chinese traditional medicine 、 animal 、 additive, etc. with water 、 ethanol 、 carbinol and act and recycle and concentration of organic solvent
本設備適用於植物草藥、中藥材、動物藥食品添加劑等。採用水、乙醇、甲醇、丙酮等的提取和有機溶劑的回收與濃縮。Methods : we examined 102 patients who underwent photorefractive keratectomy and received topical steroids ( either fluorometholone 0. 1 % or prednisolone acetate 0. 5 % alone or combined ) as part of postoperative therapy
方法：我們檢查了103名已行屈光性角膜切除術並以局部類固醇（ 0 . 1丙酮縮氟氫羥龍或0 . 5潑尼松龍或二者兼有）作為部分術后治療的病人。Synthesis of benzyl acetate using solid superacid s2o82 - zro2 - cr2o3 as catalyst
微波輻射條件下季戊四醇雙縮醛和雙縮酮化合物的合成So it has increasing commercial demand. escherichia coli and many other microoganism synthesize aromatic amino acids through the condensation reaction between phosphoenolpyru vate ( pep ) and erythrose - 4 - phosphate ( e4p ) to form 3 - deoxy - d - arabinohep tulosonate 7 - phosphate ( dahp ). pep and e4p are limiting substrates for formation of dahp
大腸桿菌和許多微生物一樣，其合成芳香族氨基酸的起始物是由磷酸烯醇式丙酮酸（ pep ）和4 -磷酸赤癬糖（ e4p ）二者縮合形成的3 -脫氧- -阿拉伯庚酮糖酸- 7 -磷酸（ dahp ） 。Catalytic synthesis of cyclohexanone glycol ketal by coal activated carbon modified by kmno4 as a catalyst
高錳酸鉀改性煤基活性炭催化合成環己酮乙二醇縮酮The traditional catalyst used in acetal ( ketal ) synthetic reaction is strong inorganic acid. but there is some limits to its use because of its side reaction, strong erosion and liability to pollute the environment. molybdophosphoric acid is used as catalyst and three condensation products are prepared through the direct reaction of aldehydes ( ketones ) and ethylene. in addition, several elements of affecting the reaction is researched. it is proved that molybdophosphoric acid is very active as catalyst in less addition, the product yield is quite high and the quality of reuse is quite good
縮醛（酮）合成反應的傳統催化劑為無機強酸，但由於副反應多、腐蝕性強和易污染環境等缺點，其使用受到限制.用磷鉬酸為催化劑，通過醛（酮）與乙二醇直接反應得到了三種縮合產物.對影響反應的諸因素進行研究，結果表明，用磷鉬酸作催化劑，用量小，活性高，產品收率較高，且重復使用性能較好Abstract : the traditional catalyst used in acetal ( ketal ) synthetic reaction is strong inorganic acid. but there is some limits to its use because of its side reaction, strong erosion and liability to pollute the environment. molybdophosphoric acid is used as catalyst and three condensation products are prepared through the direct reaction of aldehydes ( ketones ) and ethylene. in addition, several elements of affecting the reaction is researched. it is proved that molybdophosphoric acid is very active as catalyst in less addition, the product yield is quite high and the quality of reuse is quite good
文摘:縮醛（酮）合成反應的傳統催化劑為無機強酸，但由於副反應多、腐蝕性強和易污染環境等缺點，其使用受到限制.用磷鉬酸為催化劑，通過醛（酮）與乙二醇直接反應得到了三種縮合產物.對影響反應的諸因素進行研究，結果表明，用磷鉬酸作催化劑，用量小，活性高，產品收率較高，且重復使用性能較好Catalytic synthesis of cyclohexanone ethylene ketal with h3pw12o40 pan
磷鎢雜多酸摻雜聚苯胺催化合成環己酮乙二醇縮酮Catalytic synthesis of cyclohexanone ethylene ketal with h3pw6mo6o40 tio
二氧化鈦負載磷鎢鉬雜多酸催化合成環己酮乙二醇縮酮Catalytic synthesis of ethyl acetoacetate ethylene glycol ketal by ammonium ferric sulfate
硫酸鐵銨催化合成乙酰乙酸乙酯乙二醇縮酮The pentaerythritol diacetals were effectively synthesized through condensation reaction of pentaerythritol with aldehydes and ketones promoted by zirconium sulfate - silica gel under microwave irradiation
摘要微波輻射硫酸鋯矽膠催化季戊四醇與醛、酮縮合反應，高收率制得了雙縮醛和雙縮酮化合物。Abstract : using soy lecithin concentrates as raw material, through ethanol extraction of pc, fractionation of detoxin, vacuum concentration, deoil in acetone, absorbents decoloration, filtration, concentration, the soy lecithin rich in pc was obtained
文摘:以濃縮大豆磷脂為原料，用乙醇萃取富集卵磷脂餾分，經分離去毒、真空濃縮、丙酮脫油、吸附脫色、過濾、濃縮，得到大豆卵磷脂。A solvent - free procedure for synthesis of n - sulfonylimines catalyzed by zr 2 183 ; 4h2o sio2 solid acid under microwave irradiation
微波輻射下氨基磺酸催化合成季戊四醇雙縮醛酮分享友人