Kinetic spectrophotometric determination of trace titanium based on inhibitory discoloration reaction of dimethyl yellow

1、

Diphenyl oxalate was prepared by transesterification of dimethyl oxalate with phenol over Zn ( OAc) 2 · 2H 2O catalyst.

研究了以Zn（OAc）2·2H2O为催化剂时苯酚和草酸二甲酯酯交换合成草酸二苯酯的反应。

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2、

Study on the Supported MoO_3 Catalysts for the Synthesis of Diphenyl Oxalate from Transesterification of Dimethyl Oxalate with Phenol

负载型MoO3催化草酸二甲酯和苯酚酯交换反应合成草酸二苯酯的研究

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3、

According to these results, the addition mode of NO/ CH3ONO into dimethyl oxalate synthesis process was determined.

根据该结果确定了草酸酯合成流程中NO/CH3ONO的补充方式。

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4、

Cu/ SiO_2 Catalysts Prepared by Different Methods for Hydrogenolysis of Dimethyl Oxalate to Ethylene Glycol

Cu/SiO2催化剂制备方法对其草酸二甲酯催化氢解性能的影响

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5、

Research on the Precursor of Catalyst Cu/ SiO_2 for Hydrogenation of Dimethyl Oxalate

草酸二甲酯加氢Cu/SiO2催化剂前体的研究

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6、

In situ Infrared Studies of the Catalytical Synthesis of Dimethyl Oxalate from CO and CH_3ONO Over Al_2O_3 Supported Pd-Cu Alloy Catalysts

CO和CH30N0在Al203负载钯铜合金催化剂上合成草酸二甲酯的原位红外光谱研究

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7、

Studies on Hydrogenation of Dimethyl Oxalate on Cu/ SiO_2 Catalyst

Cu/SiO2催化剂上草酸二甲酯加氢反应的研究

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8、

Taking methanol and maleic anhydride as feed, several catalysts were tested under a given condition to determine the best one according to the selectivity of dimethyl maleate.

在强酸性阳离子交换树脂催化剂的作用下，以甲醇与顺丁烯二酸酐为原料进行催化蒸馏合成顺丁烯二酸二甲酯的研究。

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9、

The selectivity of dimethyl maleate was up to 90% based on a complete conversion of maleic anhydride.

顺丁烯二酸酐完全转化时，二甲酯产物选择性达到90%。

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10、

Several kinds of cationic exchange resin were evaluated in terms of catalyzing the reaction of methanol and maleic anhydride to produce dimethyl maleate in a fixed-bed reactor.

在固定床反应器上对顺酐与甲醇反应生成顺丁烯二酸二甲酯的催化剂进行了筛选。

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11、

Gas Chromatography Analysis of Air and Exhaust Gas Dimethyl Sulfoxide

气相色谱分析空气和废气中二甲基亚砜

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12、

Study on a new technology of desalting from crude dimethyl sulfoxide

粗二甲基亚砜除盐新工艺研究

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13、

The crystal structure of neodymium chloride with dimethyl sulfoxide

氯化钕与二甲亚砜配合物的晶体结构

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14、

Investigation of Nucleation of POM Crystal from Dimethyl Sulfoxide Solution

POM晶体在二甲亚砜溶液中的成核研究

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15、

In China, methanol is mainly used in production of formaldehyde, dimethyl terephthalate, pesticide, methyl tert-butyl ether and acetic acid, in which the consumption of methanol in fields of methanol fuel, acetic acid and formaldehyde will be increased rapidly.

我国甲醇主要用于甲醛、对苯二甲酸二甲酯、农药、甲基叔丁基醚、醋酸的生产，我国甲醇消费量增长最快的领域将是燃料甲醇、醋酸和甲醛。

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16、

The thermoplastic polyester-ether elastomer ( TPEE) was synthesized with dimethyl terephthalate ( DMT), 1,4-butylene-glycol ( BG), polytetrahydrofuran ( PTMG) as raw materials.

以对苯二甲酸二甲酯（DMT）、1,4-丁二醇（BG）、聚四氢呋喃（PTMG）为主要原料，合成热塑性聚酯弹性体（TPEE）。

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17、

Polyether ester ( PEE) antistatic agent for PET fiber was synthesized from dimethyl terephthalate ( DMT), ethylene glycol ( EG) and polyethylene glycol ( PEG).

以对苯二甲酸二甲酯（DMT）、乙二醇（EG）和聚乙二醇（PEG）为原料合成涤纶用聚醚酯型抗静电整理剂（PEE）。

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18、

This article provides a process for preparation of farinfrared ceramic functional polyester by means of interrupted stepwise from dimethyl terephthalate, ethylene glycol, farinfrared ceramics powder as modifier.

本论文以对苯二甲酸二甲酯（DMT）、乙二醇（EG）为原料，远红外陶瓷粉作改性剂，采用间歇式聚合方法合成远红外功能聚酯。

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19、

The polyester or copolyester can be converted into dimethyl terephthalate of binary acid and glycol by method of methanolysis.

介绍用甲醇醇解法把聚酯或共聚酯解聚成二元酸二甲酯和二元醇。

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20、

The synthesis of1,4-cyclohexanedimethanol from dimethyl terephthalate by two-stage liquid-phase hydrogenation was studied.

在高压反应釜中，对苯二甲酸二甲酯经两步催化加氢反应合成了1，4-环己烷：二甲醇。

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