- 更多网络例句与酸酐相关的网络例句 [注：此内容来源于网络，仅供参考]
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On the NiO/SiO〓 catalyst prepared by IM, the main hydrogenation product of MA was SA, the activity and selectivity were almost no relation with the nickel content and nickel species 3. Summarizing the characterization and activity evaluation of the catalysts, we concluded: On nickel based catalyst, when NiO was crystallite, and the Ni〓 that was prepared by reducing, hydrogenation of the MA could lead to SA but not to γ-BL; when NiO was cluster and had a properly interaction with the support, the Ni〓 prepared by reducing, could hydrogenate MA to SA then to γ-BL. When NiO cluster and crystallite were both existed on the catalyst, the hydrogenation products were mixture of SA and γ-BL, and the amounts of SA and γ-BL were related with the ratio of cluster and crystallite.
综合催化剂的表征和活性评价得出：当镍基催化剂上氧化镍以结晶态存在，经氢还原后的零价镍可使顺丁烯二酸酐加氢得到丁二酸酐，丁二酸酐难以进一步加氢为γ-丁内酯；当镍基催化剂上氧化镍以簇团形式存在，与载体之间有适当的相互作用时，经氢还原后的零价镍可使顺丁烯二酸酐加氢得到的丁二酸酐进一步加氢为γ-丁内酯；若催化剂上氧化镍既有结晶态又有簇团形式时，随二者含量比例不同而得到丁二酸酐和γ-丁内酯的混合物。
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Chromic trioxide and chromium hemitrioxide are determined with iodometry, the coefficient of variation of chromic trioxide is 0.056%, and the recovery of marked compound is 99.82-99.83%; the coefficient of variation of chromium hemitrioxide is 1.45%,and the recovery of marked compound is 98.55-99.26%; iron is determined by complexometric titration, the coefficient of variation of iron is 1.73%, and the recovery of marked compound is 99.12-99.23%;sulfate is determined by complexometric titration, the coefficient of variation of sulphate is 0.16%, and the recovery of marked compound is
Analysis Of The Chromium Electroplating Wastewater By Oxidation-reduction And Complexometric Titration-化学工程与工艺-本文采用氧化还原滴定法与络合滴定法对镀六价铬的废水中铬酸酐，三氧化二铬，铁和硫酸根的含量进行了测定：铬酸酐和三氧化二铬用碘量法测定，铬酸酐的变异系数为0.056%，加标回收率为99.82-99.83%，三氧化二铬的变异系数为1.45%，加标回收率为98.55-99.26%；铁用络合滴定法测定，其变异系数为1.73%，加标回收率为99.12-99.23%；硫酸根用络合返滴定法测定，其变异系数为0.16%，加标回收率为
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In the paper the effects and main differences of maleic anhydride and acrylic acid in the synthesis of polycarboxylate superplasticizers are analyzed according to their respective characteristics and technical requirements for synthesis.
根据马来酸酐与丙烯酸各自的特性和聚羧酸盐减水剂合成的技术要求，分析了它们在合成过程中的作用和主要差别，并概述了马来酸酐在合成中的应用情况，最后提出了马来酸酐在合成中应用的几点建议。
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Hrough copolymerization of styrene with few quantity of methacrylic acid, maleic anhydrate or 4-vinyl pyridine respectively and of butyl methacrylate with maleic anhydrate, the functional groups carboxyl, simple anhydride and pyridyl have been introduced respectively to the chain of PS or PBma.
通过苯乙烯与少量的甲基丙烯酸、马来酸酐或4—乙烯基吡啶的共聚及甲基丙烯酸正丁酯与马来酸酐的共聚，可在聚苯乙烯及聚甲基丙烯酸丁酯链上分别引入功能基因羧基、酸酐基和吡啶基对共聚物进行了红外光谱、酸碱滴定、元素分析、玻璃化转变温度、粘度及紫外光谱的测定。
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In this paper the study on optimizing the esterification of cellulose and some character of CAB(the degree of substitution of cellulose, solubility, the thermal properties and molecular weight) was discussed. The mechanism of the esterification of cellulose in butyric acid/ acetic acid/ butyric anhydride which comprises the creation of the acetic butyric anhydride, acetyl cation and butyryl cation was investigated by the study of the effect of the content of the organic acid and anhydride on the degree of acetyl and butyryl substitution of cellulose.
最后本文根据纤维素在丁酸/乙酸/丁酸酐中的酯化反应中有机酸以及酸酐的添加量对最后产物纤维素醋酸丁酸酯中乙酯或者丁酯取代度的影响，提出纤维素在丁酸/乙酸/丁酸酐中的酯化反应经历一个混和酸酐以及乙酰碳正离子、丁酰碳正离子的生成过程。
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The one is-2-isopropylidene-3-[1-(3,4-dimethoxyphenyl)ethyl-idene] succinic anhydride, the other is-2-isopropylidene-3-[1-(3,4-methylenedioxyphenyl)- ethylidene] succinic anhydride.
合成了三种苯基俘精酸酐，其中具有给电子基的3-(3，4-二甲氧基苯基)亚乙基(2-亚丙基)丁二酸酐与3-(3，4-亚甲二氧基苯基)亚乙基(2-亚丙基)丁二酸酐是新化合物。
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The invention relates to condensation products comprised of cyclic carboxylic acid anhydrides of dicarboxylic acids, tricarboxylic acid anhydrides or tetracarboxylic acid anhydrides and difunctional polyamines, especially polyoxyalkylene amines.
本发明涉及由二元羧酸的环状羧酸酐、三羧酸酐或四羧酸酐和二官能化多胺，特别是聚氧化烯胺制备的缩合产物。
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The β-CA of B.napus was located in chloroplast stroma and had the conservative motif Cys-X(subscript n-His-X2-Cys peculiar to β type carbonic anhydrases. In the secondary structure,α-helix, random coil,β-sheet, and β-turn were 39.88%, 39.27%, 16.31%, and 4.53%, respectively. The three-dimensional structure was constructed by homology modeling. The 3-D alignment of β-CA from B.napus and a monomer of β-CA octamer from pea showed that the 3-D structure of β-CA from B.napus could match well with the monomer. The alignment results Implied that β-CA from B.napus was a monomer of the β-CA octamer from B.napus.
预测结果显示，甘蓝型油菜β破酸酐酶是定位于叶绿体基质的蛋白质，具有β类碳酸酐酶所特有的保守性基序Cys-χ-His-χ2-Cys；SOPMA预测二级结构显示α螺旋(39.88%)、随机卷曲(39.27%)、β折叠(16.31%)和β转角(4.53%)；用同源建模法构建了三维结构图；通过VAST矢量比对工具将甘蓝型油菜β碳酸酐酶与模板进行三维结构比对，显示甘蓝型油菜β碳酸酐酶与碗豆β碳酸酐酶同型八聚体中的一个单体很好的匹配，推测甘蓝型油菜β碳酸酐酶全酶也是同型八聚体。
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The present paper mainly focused on the phase equilibria and crystallization separation of the multi-component aqueous salt system for cleaner production of chromium trioxide in the electro-synthesis process. And these diagrams of the above system was studied for the first time.
本文研究了该产业链中电催化法生产铬酸酐清洁工艺中多元水盐体系相平衡，首次构筑了体系相图，建立了铬酸酐多元复杂体系的结晶分离方法，为电催化法生产铬酸酐工艺路线的设计及优化提供理论依据，论文的主要内容包括如下几个方面： 1。
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In the second part, quantum chemical AM1 methods were employedto theoretically investigate the electronic structures of maleic anhydride in ground- and excited-states. On basis of the frontier orbital theoryand three bonding principles, the possibility of reaction of active α-hydroxysuccinic anhydride carbanion and active α-hydroxy-succinic anhydride radical on polymerization process of MArespectively by alkali catalyst and by hydroxyl radical was discussed. Theanionic and radical polymerization of MA discussed also. Theoreticalstudies show that both polymerization products of MA are in the chainstructures, corresponding to the experimental findings.
第二部分用量子化学AM1方法，计算研究了马来酸酐的基态和激发态电子结构；应用前线轨道理论和成键三原则分别探讨了碱催化条件下和羟基自由基引发下马来酸酐均聚合过程中α-羟基丁二酸酐碳阴离子和α-羟基丁二酸酐碳自由基活性中间体参与反应的可能性及由它们引发的马来酸酐阴离子聚合反应机理和自由基引发聚合反应机理；理论研究表明马来酸酐的均聚合产物均为链式结构，与实验事实相相符。
- 更多网络解释与酸酐相关的网络解释 [注：此内容来源于网络，仅供参考]
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Phthalic Anhydride：邻苯二甲酸酐
应国内邻苯二甲酸酐(Phthalic Anhydride)产业的申请,中华人民共和国商务部发布2008年第53号公告,决定自29日起,对原产于韩国、日本和印度的进口邻苯二甲酸酐所适用的反倾销措施进行期终复审调查.
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Maleic Anhydride：马来酸酐
本标准是为工作场所有害因素职业接触限值配套的监测方法,用于监测工作场所空气中酸酐类化合物[包括乙酐(Acetic anhydride)、马来酸酐(Maleic anhydride)和邻苯二甲酸酐(Phthalic anhydride)等]的浓度.
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carbonic anhydrase：碳酸酐酶
至於戊二醛是如何杀藻的,如果根据 Tom Barr 的说法,这主要和戊二醛抑制了碳酸酐酶(Carbonic Anhydrase)造成的. 对於结构比较简单且不具气孔的水草与藻类而言,二氧化碳经过表皮层扩散进入细胞中必须透过碳酸酐酶的作用,如果碳酸酐酶受到了抑制,
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carbonic anhydrase：碳酸酐
至于戊二醛是如何杀藻的,如果根据 Tom Barr 的说法,这主要和戊二醛抑制了碳酸酐(Carbonic Anhydrase)造成的. 对于结构比较简单且不具气孔的水草与藻类而言,二氧化碳经过表皮层扩散进入细胞中必须透过碳酸酐的作用,如果碳酸酐受到了抑制,
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creatinine：肌酸酐
例如新生儿的HPHPA平均值大约是三.七微摩尔(mmol)/摩尔(mol)肌酸酐(Creatinine),浓度范围零.三~十二.七微摩尔/摩 尔肌酸酐;而正常控制组男童的平均值是九一.五,中位数五一.一;但自闭症男童的平均值往往高达控制组的两倍,达一九二.四,
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maleic acid anhyride：顺丁烯二酸酐(即失水草果酸酐)
010468 水杨酸 Salicylic acid | C010060 顺丁烯二酸酐(即失水草果酸酐) maleic acid anhyride | C010155 四甲基吡啶 tetramethyl
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titanic acid anhydride：钛酸酐,二氧化钛
titania二氧化铁 | titanic acid anhydride钛酸酐,二氧化钛 | titanic anhydride钛酸酐,二氧化钛
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carbyl sulfate; ethionic anhydride：次乙硫酸磺酸酐;亚乙基璜酸酐
氟化羰基;氧氟化碳 carbonyl fluoride; carbon oxyfluoride | 羧苯亚胂酸 carboxyphenylarsenic acid | 次乙硫酸磺酸酐;亚乙基璜酸酐 carbyl sulfate; ethionic anhydride
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Propionic anhydride：丙酸酐标准品
O-128 马来酸酐标准品 Maleic anhydride | O-129 丙酸酐标准品 Propionic anhydride | O-130 琥珀酸酐标准品 Succinic anhydride
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MNA：甲基纳迪克酸酐
得到液态的混合芳胺固化剂. 芳胺也可与其他胺类复配共熔液化. 采用氯菌酸酐(HET)分别与六氨邻苯二甲酸酐(HHPA)、十二烯琥珀酸酐(DD-SA)、甲基纳迪克酸酐(MNA)和邻苯二甲酸酐(PA)共熔混合液化温度如表12所示.