The determination of pyridine adsorption of samples revealed that materials have a typic characterization of proton acid, and the proton acid centers increased with the increase of s content.
磺酸基很好地嵌入孔壁基质中，吡啶吸附测定显示了典型的质子酸特征，而且酸中心随硫含量增加而增多。
A new reversed phase high performance liquid chromatography method is described for the simultaneous determination of pyridine, 2-aminopyridine, 2-methylpyridine and 2-pyridinecarboxylic acid.
建立了以磷酸氢二钾-磷酸盐缓冲溶液中添加甲醇为流动相，以反相高效液相色谱同时测定吡啶、2-氨基吡啶、2-甲基吡啶和2-吡啶甲酸的新方法。
IR results of pyridine adsorption reveal that supported samples have both Bronsted and Lewis acid centers, and 2-propanol dehydration is a Bronsted acid catalysed reaction.
吡啶吸附红外光谱结果显示负载样品同时具有B酸和L酸中心，异丙醇脱水催化反应发生在B酸位上。
The direct titration of pyridine with aqueous standard solution of hydrochloric acid in the presence of concentrated neutral salts have been studied.
本文对浓中性盐存在时，用盐酸标准溶液直接滴定吡啶进行了研究。
The stable derivative of L-ascorbic acid, L-ascorbic Acid-2-sulphuric acid ester dipotassium salts are synthesized using potassium pyrosulfate as esterifying agent and pyridine as solvent.
以焦硫酸钾为酯化剂，以吡啶为溶剂合成了L- 抗坏血酸的稳定衍生物L- 抗坏血酸- 2 -硫酸酯二钾盐。
Hind of profess to convinced is easy decompose inside bowel reach 5 - amino salicylic acid for sulphanilamide pyridine, to colonic wall the organization has affinity, have antiphlogistic effect.
口服后易在肠内分解为磺胺吡啶及5-氨基水杨酸，对结肠壁组织有亲合力，起到消炎作用。
Bifunctional organic ligand 2, 4, 6-pyridine tricarboxylic acid, water-soluble rare-earth fluorescence labeling material and preparation method thereof.
双功能有机配体2,4,6 -吡啶三甲酸、其水溶性稀土荧光标记材料及其制备方法。
The manufacture process of nicotinic acid based on ammonia oxidation method, which is introduced in this article, reached 99% conversion of 3-methyl pyridine.
本文介绍的基于氨氧化法生产烟酸的工艺，选择了适当的复合催化剂，使原料3-甲基吡啶转化率可达99％，技术水平达到国外先进水平。
In the paper, a PVC membrane picric acid anion selective electrode is developed using Bromhexadecyl pyridine picrate ion pair as the active component and dioctyl phthalate as the plasticizer.
本文用苦味酸溴代十六烷基吡啶离子对作为电活性物质，以邻苯二甲酸二辛酯为增塑剂，研制成以PVC为基质膜的苦味酸离子选择电极。
Furthermore, we studied the influences of the process conditions on WPG of modified fir powder when pyridine was used as catalyst and acid absorbent.
并在使用吡啶的反应体系下研究了工艺条件对改性杉木粉wpg的影响。
Pyridine-4-boronic acid pinacol cyclic ester;
吡啶-4-硼酸频哪醇酯；
Pyridine-2,3-dicarboxylic anhydride, a key intermediate of the herbicide imazapyr, was synthesized from pyridine-2,3-dicarboxylic acid and anhydride according to the methods in the patents.
吡啶羧酸酐是新型广谱除草剂灭草烟的重要中间体，文献所介绍的合成方法是以2，3-吡啶二羧酸与乙酸酐反应制得。
In the acidic aqueous solution of copper sulfate, pyridine-2,3-dicarboxylic acid was synthesized by oxidizing quinoline with sodium chlorate, and the yield of the product could reach 56.4%.
在含硫酸铜的酸性水溶液中，用氯酸钠作氧化剂，氧化喹啉得到2，3-吡啶二甲酸，产率为56·4%；
Trifluoroacetic acid pyridine salt;
三氟乙酸吡啶鎓；
The binary and ternary solid complexes of rare earth Eu3+ and La3+ with pyridine-2 , 6-dicarboxylic acid(H2DPC) and 1, 10-phenanthroline are synthesized.
合成了稀土铕、镧与吡啶-2，6二甲酸形成的二元配合物及铕与邻菲罗啉和吡啶-2，6二甲酸形成的三元配合物。
The binary and ternary solid complexes of rare earth Eu3+ and La3+ with pyridine-2 , 6-dicarboxylic acid(H2DPC) and 1, 10-phenanthroline are synthesized.
合成了稀土铕、镧与吡啶-2，6二甲酸形成的二元配合物及铕与邻菲罗啉和吡啶-2，6二甲酸形成的三元配合物。
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