脱醇

Original oils, in addition to three main contain glycerol, but also contains a small amount of free acids, phospholipids, sterols, and vitamins pigment composition, according to different needs, from using phospholipid, drying, deacidification, deodorizer, bleaching methods refined.

原始的油脂中，除主要含有三甘油酯外，还含有少量游离酸、磷脂、甾醇、色素和维生素等成分，可根据不同的需要，用脱磷脂、干燥、脱酸、脱臭、脱色等方法精制。

DBP and DEHP have the similar photodegradation mechanism. The predominant pathway for DBP and DEHP photodegradation in the Fe -oxalate complexes system is hydroxyl radical extracting H atom in α-position of the aliphatic chain close to the carboxyl group followed by oxidation to produce alcoholized derivatives ROH. ROH then breaks down to phthalic acid and dialcohol that will be further oxidized up to mineralization.

DBP和DEHP的光降解历程相似，主要反应途径是OH自由基提取烷基上与羧基相连的α-H原子，然后被氧化生成醇衍生物，再分解成为酞酸和二醇，酞酸经历开环和进一步脱羧，二醇可以被氧化成为低级烷基羧酸，直至矿化。

The results of in situ DRIFTS on propylene oxidation show that the allyl species originated from α-H abstraction of propylene were located at the wavenumbers of 1454 cm~(-1) and 1427 cm~(-1). The rate-determining step is the abstraction of an α-H abstraction from a lattice oxygen linked to a bismuth ion to form a π-allyl intermediate coordinated to a molybdenum ion. The metal-oxo group then attacks the allyl intermediate forming a σ-bonded oxygen-allyl species, which is in a rapid equilibrium with the π- bonded species. The σ-bonded species then transforms to acrolein by further abstraction of α-H. Such species as formate, carboxylate, carbonate transform to deep oxidation products. The acetone was derived from propylene by an enolic species at lower temperatures.

丙烯氧化反应体系的原位漫反射红外光谱研究结果表明，由丙烯脱氢生成的烯丙基中间物种吸收峰在1454cm~(-1)和1427cm~(-1)处；基于此提出了较完整的丙烯氧化反应网络：丙烯选择氧化生成丙烯醛主要经历丙烯脱除甲基上的一个H，生成烯丙基物种，该物种嵌氧生成σ-O络合物，脱氢得到丙烯醛前驱体，脱附生成丙烯醛；完全氧化产物是由催化剂表面上生成甲酸盐、羧酸盐、碳酸盐等形式的中间物种转化而成；较低反应温度下丙烯氧化生成丙酮，通过烯醇式中间物种氧化生成丙酮前驱体得到。

In this work , 1,8-octodiol, the starting material, reacted with 40% hydrobromic acid to produce 8-bromooctan-1-ol, with the catalytic action of PPTs, its hydroxyl group was protected by 2,3-dihydropyran. Then it coupled with 1-heptaalkyne, by means of P-2 nickel as catalyst, stereoselectivity catalysis hydrogenated, with the catalytic action of acid to take off extremital 2, 3-dihydropyran which protected hydroxy group, then used PCC to oxidize alcohol into corresponding aldehyde.

以1，8-辛二醇为原料，与40%氢溴酸进行单溴代反应，得到8-溴-1-辛醇，在对甲苯磺酸吡啶盐的催化下与2，3-二氢吡喃反应，保护分子中的羟基，再与1-庚炔进行偶联，以P-2镍为催化剂立体选择性催化加氢，酸性条件下脱末端的2，3-二氢吡喃对羟基的保护，使用氯铬酸吡啶盐将醇氧化成醛。

Both star copolymer precursors are hydrolyzed in the acidic conditions, then the corresponding recovered star copolymers of EO and glycidol with multi pending hydroxylmethyls are esterified with 2-bromoisobutyryl bromide to produce the ATRP macroinitiators with multi pending bromoisobutyryl groups . Then the latters initiate the polymerization of styrene to form the corresponding amphiphilic three- and four-arm star PEO-g-PS.

在阴离子共聚EPEE单体和环氧乙烷单体的过程中，通过变换引发剂体系中的醇的结构(由原来的二元醇变成多元醇，如三羟甲基丙烷和季戊四醇)，合成了星形结构的共聚物，通过水解反应脱去保护基团后，再与2-溴异丁酰溴反应，得到链的侧端挂有很多2-溴异丁酸酯基的星形大分子引发剂，通过ATRP聚合机理引发苯乙烯聚合得到PEO为主链，PS为侧链的星形一接枝共聚物。

Water, Kaolin, Montmorillonite, Stearic Acid, Cetyl Alcohol, Glycereth-26, Glyceryl Stearate, Peg-100 Stearate, Aloe Barbadensis Leaf Juice, Triethanolamine, Titanium Dioxide, Menthyl Pca, Lauryl Pca, Fragrance, Diazolidinyl Urea, Propylene Glycol, Ethoxydiglycol, Methylparaben, Citric Acid, Panax Ginseng Root Extract, Zinc Pca, Copper Pca, Yellow 5, Blue 1

水，高岭土，蒙脱土，硬脂酸，鲸蜡醇，Glycereth-26，甘油硬脂酸酯，培格100硬脂酸，芦荟叶汁，三乙醇胺，二氧化钛，薄荷醇，香料，尿素醛，丙二醇，乙氧基二甘醇，对羟基苯甲酸甲酯，柠檬酸，人参精华，锌，铜，黄色5#，蓝色1#。

Secondly, the silver based catalysts modified by phosphorus, zirconium, zinc, potassium and so on using molecular sieve as carrier, which were produced by ion-exchange method, had also good catalytic performance for 1,2-propane glycol oxidation to methylglyoxal. The conversion of 1,2-propane glycol and the selectivity of methylglyoxal were both high, and the impurity such as formaldehyde and acetaldehyde in the product is little. At the condition of the temperature 300 ℃, the molar ratio of oxygen to 1,2-propane glycol 1.7:1, the space velocity 6000h~(-1), and the concentration of 1,2-propane glycol 70wt%, the conversion of 1,2-propane glycol is 90% and the selectivity of methylglyoxal is 45% on the Ag-P catalyst.

其次对采用离子交换法制备的负载在分子筛上的银系催化剂进行了研究，发现此催化剂在助催化剂磷、锆、锌、钾等的作用下对丙二醇的低温氧化脱氢具有很高的活性，可以得到较好的丙酮醛的收率，并且产物中的甲醛、乙醛副产物的量比较低；经过对Ag-P催化剂上反应条件的考察，发现当温度为300℃、氧醇比1.7：1、空速6000h~(-1)、丙二醇浓度为70wt%时，丙二醇的转化率为90%，丙酮醛的选择性为45%。

Mesoporous Ti02 is also synthesized with glycerol and pentaerythrite as temp-lates separately.It is characterized by TEM,XRD,BET and FTIR etc.

以多元醇类化合物结构相近的丙三醇，季戊四醇有机小分子化合物为模板剂制备出了中孔纳米二氧化钛粉体，对所得粉体进行了透射电镜，傅立叶红外，N2吸附一脱吸，粉末X一射线衍射等的测试。

Trehalase plays an important role in glycogen accumulation in the formarion of diapaused eggs. At the beginning of diapause, glycogen phosphorylase is the key enzyme to glycogen decomposition and the formation of sorbitol and glycerol, whereas at the stage of diapause termination, NAD-sorbitol dehydrogenase is the key enzyme to sorbitol decomposition and glycogen re-synthesis.

在滞育卵形成过程中，海藻糖酶对糖原的积累起着重要的作用；在滞育开始时，糖原的分解与山梨醇、甘油的形成，糖原磷酸化酶是关键酶；在滞育解除时，山梨醇的分解与糖原的再生成时山梨醇脱氢酶(NAD-sorbito1 dehydrogenase)是关键酶。

N-(2-hydroxyethyl)-glucamine was dehydrogenated to 6-(2-droxyethyl) amino-6-deoxy-a-L-sorbofiuanose the key intermediate of miglitol by the resting cells of Gluconobater oxydans Gouv2007 through aeration. 6-(2-Droxyethyl) amino-6-deoxy-a-L-sorbofiuanose was hydrogenated catalyticlly to miglitol. In the transformation of N-(2-hydroxyethyl)-glucamine to miglitol, the transformation rate was 77.3%.

氧化葡萄糖酸杆菌Gouv2007的静息细胞在通气下氧化N-羟乙基葡糖胺脱氢生成米格列醇的前体物质6-脱氧－6-羟乙基氨基－α-L-呋喃山梨糖，再催化加氢生成米格列醇，对从N-羟乙基葡糖胺生成米格列醇的底物转化率为77.3%。

With Death guitarist Schuldiner adopting vocal duties, the band made a major impact on the scene.

随着死亡的吉他手Schuldiner接受主唱的职务，乐队在现实中树立了重要的影响。

But he could still end up breakfasting on Swiss-government issue muesli because all six are accused of nicking around 45 million pounds they should have paid to FIFA.

不过他最后仍有可能沦为瑞士政府&议事餐桌&上的一道早餐，因为这所有六个人都被指控把本应支付给国际足联的大约4500万英镑骗了个精光。