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- The synthesis of i amyl acetate from i amylic alcohol and acetic acid using silica gel carrier acid as catalyst is reported. 以乙酸和异戊醇为原料,采用硅胶载体酸为催化剂合成乙酸异戊酯。
- Furthermore, three Keggin-type HPAs (H4PMo11VO40, H5PMo10V2O40, H6PMo9V3O40) were prepared according to modified ether-extraction method and impregnated onto B-type globoid silica gel carrier. 采用醚萃取法合成三种钒取代的杂多酸,H4PMo11VO40、H5PMo10V2O40和H6PMo9V3O40,以B型球形硅胶为载体,浸渍法制备了负载型杂多酸(HPA)催化剂,研究常温常压下甲醛的催化氧化反应。
- Thermal activation conditions of silica gel carrier for catalysts of olefin polymerization 聚烯烃催化剂载体硅胶活化条件的研究
- silica gel carrier 硅胶载体
- The crude oil is chromatographed over silica gel. 粗制油状物用硅胶进行色谱分离。
- The filter cake of silica gel used as the carrier of polyolefine catalyst was dried by compartment drying and centrifugal spray drying respectively. 采用厢式干燥和离心喷雾干燥2种干燥方法,对聚烯烃催化剂用载体硅胶滤饼的干燥效果进行了比较,并研究了干燥过程对硅胶物性的影响。
- The purity of isoquercitrin was isolated with a silica gel column. 酶反应产物用硅胶柱层析法提取,可以得到高纯度的异槲皮甙。
- The handpiece cable is made from silica gel tube,soft and durable. 换能器尾线采用进口材料硅胶管,柔软耐用。
- Using Corse porus silica gel as carrier, catalysts as Titania/silicon dioxide, porous glass, lateral-cut glass fibre and diagonal glass fibre are prepared with hydrolysis-sol method. 采用溶胶凝胶工艺分别制备出颗粒状负载型TiO_2/SiO_2催化剂和多孔玻璃催化剂,横纹、斜纹玻璃纤维催化剂。
- All seals of this machine use the thermostable silica gel (food grade). 该机所有密封件均采用耐高温硅胶件(食品级)。
- There is no possibility to form silica gel in the hard-ened waterglass. 硬化的水玻璃实际上是失水的高模数水玻璃,不可能有硅凝胶生成。
- The specimen was extracted by the macroreticular resin and silica gel column. 样品经大孔树脂柱、硅胶柱分离,然后用TLC进行鉴定合并。
- You may reactivate the silica gel by desorbing the water through heating. 硅胶吸附水份后可通过脱附方式除掉水份而再生。
- The alternative use of buffered silica gel resulted in modest hydrolysis (~5-10%) of the imine. 选用温和的水解导致缓冲硅胶(~5-10%25)的亚胺.
- METHODS: Alcoholic extraction, silica gel, ODS column chromatography and recrystallization were used. 方法:采用工业酒精提取、胶柱层析、DS柱层析和重结晶等方法。
- Most of the commercially available reversed phase packing materials utilize fully end-capped, high-purity silica gel. 大部分市面上之逆相充填材料利用完善之终结处理,高纯度之矽胶。
- The pastern mold adopts wearable and heat-resistant silica gel, The aluminium mold can come to 200. 胶模采用耐磨热硅胶;外铝模温度可达200。
- Sand should be added carefully, otherwise the silica gel layer will be destructed. 装石英砂时应慢慢加入,不可一次加入而造成柱层破坏。
- Solid conveyor rollers coated with silica gel to bear heavy objects and minimize damage and wear. 输送滚轴全部选用实心滚轴、外部包硅胶,能承受大重量的物体及耐高温。
- A substance,such as calcium oxide or silica gel,that has a high affinity for water and is used as a drying agent. 干燥剂,脱水剂一种对水有很强吸附性的物质,常用作干燥剂例如:氧化钙,锗化硅等