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大孔吸附樹脂

CAS號(hào)	0-00-0
規(guī)格	25L/袋；50L/桶	純度	99.99
貨號(hào)	DM18；LK37；AMK33	貨期	需咨詢
品牌	艾美科健	庫存	1000ton
規(guī)格	25L/袋；50L/桶
純度	99.99
貨號(hào)	DM18；LK37；AMK33
貨期	---
品牌	艾美科健
庫存	1000ton
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參考價(jià)：￥100.00 元/公斤

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貨號(hào)	品牌	純度	規(guī)格	參考價(jià)	貨期

產(chǎn)品詳情

詳細(xì)信息(中文)：
大孔樹脂吸附作用是依靠它和被吸附的分子(吸附質(zhì)) 之間的范德華引力，通過它巨大的比表面進(jìn)行物理吸附而工作，使有機(jī)化合物根據(jù)有吸附力及其分子量大小可以經(jīng)一定溶劑洗脫分開而達(dá)到分離、純化、除雜、濃縮等不同目的。大孔吸附樹脂為吸附性和篩選性原理相結(jié)合的分離材料。大孔吸附樹脂的吸附實(shí)質(zhì)為一種物體高度分散或表面分子受作用力不均等而產(chǎn)生的表面吸附現(xiàn)象，這種吸附性能是由于范德華引力或生成氫鍵的結(jié)果;同時(shí)由于大孔吸附樹脂的多孔性結(jié)構(gòu)使其對(duì)分子大小不同的物質(zhì)具有篩選作用。通過上述這種吸附和篩選原理，有機(jī)化合物根據(jù)吸附力的不同及分子量的大小，在大孔吸附樹脂上經(jīng)一定的溶劑洗脫而達(dá)到分離的目的。
吸附條件和解吸附條件的選擇直接影響著大孔吸附樹脂吸附工藝的好壞，因而在整個(gè)工藝過程中應(yīng)綜合考慮各種因素，確定最佳吸附解吸條件。影響樹脂吸附的因素很多，主要有被分離成分性質(zhì)(極性和分子大小等) 、上樣溶劑的性質(zhì)(溶劑對(duì)成分的溶解性、鹽濃度和PH 值) 、上樣液濃度及吸附水流速等。
通常極性較大分子適用中極性樹脂上分離，極性小的分子適用非極性樹脂上分離；體積較大化合物選擇較大孔徑樹脂；上樣液中加入適量無機(jī)鹽可以增大樹脂吸附量；酸性化合物在酸性液中易于吸附，堿性化合物在堿性液中易于吸附，中性化合物在中性液中吸附；一般上樣液濃度越低越利于吸附；對(duì)于滴速的選擇，則應(yīng)保證樹脂可以與上樣液充分接觸吸附為佳。影響解吸條件的因素有洗脫劑的種類、濃度、pH值、流速等。洗脫劑可用甲醇、乙醇、丙酮、乙酸乙酯等，應(yīng)根據(jù)不同物制裁在樹脂上吸附力的強(qiáng)弱，選擇不同的洗脫劑和不同的洗脫劑濃度進(jìn)行洗脫；通過改變洗脫劑的pH 值可使吸附物改變分子形態(tài)，易于洗脫下來；洗脫流速一般控制在0. 5 ～5mL/ min。

詳細(xì)信息(英文)：
The adsorption of macroporous resin depends on the van der Waals attraction between it and the adsorbed molecule (adsorbate). Through its huge specific surface physical adsorption, the organic compounds can be separated by certain solvent elution according to the adsorption force and molecular weight, so as to achieve different purposes of separation, purification, impurity removal and concentration. Macroporous adsorption resin is a separation material which combines the principle of adsorption and screening. In essence, the adsorption of macroporous resin is a kind of surface adsorption phenomenon caused by high dispersion of objects or unequal force of surface molecules. This adsorption performance is the result of van der Waals gravitation or hydrogen bond formation. At the same time, the porous structure of macroporous resin makes it have screening effect on substances with different molecular size. According to the above adsorption and screening principle, organic compounds can be separated by certain solvent elution on macroporous adsorption resin according to different adsorption capacity and molecular weight. [1]

The selection of adsorption conditions and desorption conditions directly affects the adsorption process of macroporous adsorption resin. Therefore, various factors should be considered in the whole process to determine the best adsorption and desorption conditions. There are many factors affecting resin adsorption, such as the properties of the separated components (polarity and molecular size), the properties of the sample solvent (solubility, salt concentration and pH value of the components), the sample solution concentration and adsorption water flow rate.

Generally, the larger polar molecule is suitable for separation on the polar resin, and the smaller polar molecule is suitable for separation on the non-polar resin; the larger volume compound is selected as the resin with larger pore size; the amount of inorganic salt added to the sample。

產(chǎn)品實(shí)物圖

商家信息

艾美科健（中國）生物醫(yī)藥有限公司

聯(lián)系人：王貴福

號(hào)碼一： 158****

號(hào)碼二： ****

VIP企業(yè)默認(rèn)展示聯(lián)系方式，非VIP企業(yè)僅限注冊(cè)登錄用戶可見

公司類型：生產(chǎn)廠
成立時(shí)間：2007-01-29
所在地區(qū)：山東省濟(jì)寧市
注冊(cè)資本：7800萬元

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