17 results about "Pyridine carboxylate" patented technology

This invention relates to a method for using a low-content ruthenium-based catalyst modified with nitrogen and oxygen ligands in the hydrochlorination of acetylene. The invention utilizes 2-pyridine carboxylate as a ligand, commercial activated carbon as a support, trace amounts of ruthenium as the main active component, and water as a solvent. An improved synthesis procedure yields a low-content ruthenium-based catalyst with ruthenium ions coordinated by a modifier and commercial activated carbon as a support, significantly improving catalyst performance while reducing ruthenium content. This catalyst exhibits high activity and vinyl chloride selectivity in the fixed-bed hydrochlorination of acetylene to vinyl chloride, and its low cost makes it highly valuable for industrial applications. The ruthenium loading is 0.1%, and the reaction gas space velocity is 170 h⁻¹. ‑1 V (C2H2) / V (HCl) With a ratio of 1:1.05 and a reaction temperature of 180℃, the acetylene conversion rate can reach 84.3%, the vinyl chloride selectivity is greater than 99%, and the activity remains basically unchanged within 10 hours.

The invention relates to the technical field of energy storage batteries, and particularly discloses an aqueous zinc ion battery electrolyte as well as a preparation method and application thereof. The electrolyte is composed of electrolyte zinc salt, pyridine organic metal salt and water. And after hydrolysis, metal ions in the weakly acidic pyridine organic metal salt are in a positively charged state. Therefore, in the zinc deposition process, positively charged metal ions and picolinate radicals can be adsorbed on zinc favorable nucleation sites to promote uniform deposition of zinc ions. Compared with a metal ion additive in the prior art, interface adsorption of hydrolyzed pyridine organic molecules can effectively reduce the water content of the surface of the zinc negative electrode and construct a hydrophobic interface channel, so that hydrogen evolution reaction (HER) can be effectively inhibited, and the interface corrosion phenomenon of the zinc negative electrode is further eliminated. According to the analysis, the pyridine organic metal salt additive has the advantage of synergistic effect of multiple functions at the same time, so that dendrite-free growth and corrosion inhibition of the zinc negative electrode are realized, and the cycle life of the battery is prolonged.

Disclosed herein are compositions comprising (a) a pyridine carboxylate herbicide or an agriculturally acceptable N-oxide, salt, or ester thereof and (b) an HPPD inhibitor herbicide or an agriculturally acceptable salt or ester thereof. Also disclosed herein are methods of controlling undesirable vegetation, comprising applying to vegetation or an area adjacent the vegetation or applying in soil or water to control the emergence or growth of vegetation (a) a pyridine carboxylate herbicide or an agriculturally acceptable N-oxide, salt, or ester thereof and (b) an HPPD inhibitor herbicide or an agriculturally acceptable salt or ester thereof.

Disclosed herein are safened compositions comprising (a) a pyridine carboxylate herbicide or an agriculturally acceptable N-oxide, salt or ester thereof and (b) a quinolinoxyacetate safener or agriculturally acceptable salt or ester thereof. Also disclosed herein are methods of controlling undesirable vegetation, comprising applying to vegetation or an area adjacent the vegetation or applying in soil or water to control the emergence or growth of vegetation (a) a pyridine carboxylate herbicide or an agriculturally acceptable N-oxide, salt or ester thereof and (b) a quinolinoxyacetate safener or agriculturally acceptable salt or ester thereof.

The current invention relates to a herbicidal formulation comprising: a herbicide and a polymer, wherein, the polymer is a polyferulate with an average molecular mass higher than 400 g / mol, and the weight ratio of the herbicide over the polymer is between 1:10 and 1000:1. Furthermore, the herbicide is from the chemical family of the phenylpyrazoles, triazolinones, glycines, triazolopyrimidines, cyclohexanediones, pyridiniums, sulfonylureas, carbamates, benzofurans, benzoic acids, bipyridyliums, dinitroanilines, diphenylethers, oxyacetamides, phenoxy-carboxylic-acids, phosphinic acids, pyridine carboxylates, pyridinecarboxamides, uracils or carboxylic acids. The invention also relates to the use of said formulation. The invention furthermore relates to a method for controlling weeds or for aiding harvest (desiccant), whereby said herbicidal formulation is applied in an herbicidally effective amount.

This invention relates to the field of composite catalyst technology, and discloses a composite catalyst containing a zinc pyridine carboxylate complex, its preparation method, and its application. The composite catalyst comprises a zinc pyridine carboxylate complex in a molar ratio of 1:1-60 and a bimetallic cyanide catalyst DMC. The zinc pyridine carboxylate complex simultaneously possesses electron-withdrawing and electron-donating groups, exhibiting high selectivity and high activity, with a catalytic activity reaching 510 g after 12 h. polyment / g cat It can achieve extremely high propylene oxide conversion rate in the low-temperature (30-75℃) catalytic carbon dioxide copolymerization reaction while ensuring high carbonate content, significantly shortening the polymerization reaction time, so that the product has high carbonate content, high molecular weight, high conversion rate and low by-product content, making it suitable for industrial production.

The present application relates to the technical field of composite catalysts, and specifically discloses a zinc pyridine carboxylate complex composite catalyst, wherein the zinc pyridine carboxylate complex composite catalyst is prepared by the following preparation method, the preparation method comprising feeding a zinc pyridine carboxylate complex, a double metal cyanide catalyst and a mixed solvent into a high pressure reactor at one time; using an ultrasonic device to ultrasonically dissolve a mixture consisting of the zinc pyridine carboxylate complex, the double metal cyanide catalyst and the mixed solvent; and preparing the zinc pyridine carboxylate complex composite catalyst by reacting in an inert gas atmosphere. In particular, in order to improve the efficiency of ultrasonic dissolution, the parameters of the ultrasonic device are adaptively controlled based on the dissolution rate of the reactants during the ultrasonic dissolution process to improve the dissolution efficiency and dissolution effect.

The present invention relates to the technical field of composite catalysts, and discloses a zinc pyridine carboxylate complex composite catalyst and a preparation method thereof, which is prepared by a high-temperature reaction in a high-pressure reactor using a specific zinc pyridine carboxylate complex containing different electronic group functional groups, a DMC catalyst, a polar solvent, and a non-polar solvent. Specifically, in the preparation method of the present invention, a high-pressure reactor is used to make it easier for zinc pyridine carboxylate and two metals in a bimetallic catalyst to form active sites under a high-temperature inert gas environment, thereby exerting a synergistic effect, making the selectivity and activity of the catalyst higher, and especially for two types of catalysts, the interaction between the metals can be enhanced under an inert gas atmosphere, thereby improving the structural stability of the catalyst, and the high-temperature environment is conducive to synthesizing a stable catalyst product during the synthesis process, and the intermediate that is easily decomposed at high temperature can be stabilized under the inert gas atmosphere, which is conducive to the synthesis of the composite catalyst.

Disclosed herein are compositions comprising (a) a pyridine carboxylate herbicide or an agriculturally acceptable N-oxide, salt, or ester thereof and (b) an acetolactate synthase (ALS) inhibitor or an agriculturally acceptable salt or ester thereof. Also disclosed herein are methods of controlling undesirable vegetation, comprising applying to vegetation or an area adjacent the vegetation or applying in soil or water to control the emergence or growth of vegetation (a) a pyridine carboxylate herbicide or an agriculturally acceptable N-oxide, salt, or ester thereof and (b) an ALS inhibitor or an agriculturally acceptable salt or ester thereof.

Disclosed herein are safened compositions comprising (a) a pyridine carboxylate herbicide or an agriculturally acceptable N-oxide, salt or ester thereof and (b) an azole carboxylate safener or agriculturally acceptable salt or ester thereof. Also disclosed herein are methods of controlling undesirable vegetation, comprising applying to vegetation or an area adjacent the vegetation or applying in soil or water to control the emergence or growth of vegetation (a) a pyridine carboxylate herbicide or an agriculturally acceptable N-oxide, salt or ester thereof and (b) an azole carboxylate safener or agriculturally acceptable salt or ester thereof.

Disclosed herein are compositions comprising (a) a pyridine carboxylate herbicide or an agriculturally acceptable N-oxide, salt, or ester thereof and (b) a protoporphyrinogen oxidase (PROTOX) inhibitor herbicide or an agriculturally acceptable salt or ester thereof. Also disclosed herein are methods of controlling undesirable vegetation, comprising applying to vegetation or an area adjacent the vegetation or applying in soil or water to control the emergence or growth of vegetation (a) a pyridine carboxylate herbicide or an agriculturally acceptable N-oxide, salt, or ester thereof and (b) a protoporphyrinogen oxidase (PROTOX) inhibitor herbicide or an agriculturally acceptable salt or ester thereof.

The present invention relates to a continuous process for manufacturing alkyl 7-amino-5-methyl-[1,2,5]oxadiazolo[3,4-b]pyridine carboxylate.

The invention discloses a CoY-MOF / AgCl-x composite material with visible light response as well as a preparation method and application thereof, and belongs to the technical field of photocatalytic materials. The composite material comprises CoY-MOF and AgCl loaded on the CoY-MOF, the chemical formula of the CoY-MOF is [CoY (pydc) 3 (H2O) 3]. 9H2O, the CoY-MOF is a bimetallic organic framework material with pyridine-2, 3-dicarboxylic acid (H2pydc) as a ligand, and each asymmetric unit contains one Co < 3 + > ion, one Y < 3 + > ion and three deprotonated pyridine carboxylate radicals. The preparation method of the composite material is simple, the structure is stable, tetracycline can be catalytically degraded under visible light irradiation, and the composite material can be recycled.

The present invention belongs to the technical field of drug synthesis, and in particular to a preparation method of 6-chloro-3-methyl-2-pyridinecarboxylic acid methyl esters. The present invention provides a preparation method of 6-chloro-3-methyl-2-pyridinecarboxylic acid methyl esters, comprising the following steps: 3-picoline-2-carboxylic acid ethyl ester, meta-chloroperbenzoic acid and a first organic solvent are mixed, and an oxidation reaction is performed to obtain 3-picoline-2-carboxylic acid ethyl ester oxide; the 3-picoline-2-carboxylic acid ethyl ester oxide, a chlorinating agent, a catalyst and a second organic solvent are mixed, and a chlorination reaction is performed to obtain 6-chloro-3-methyl-2-pyridinecarboxylic acid methyl esters. 6-chloro-3-methyl-2-pyridinecarboxylic acid methyl esters can be prepared according to the preparation method provided by the present invention, and the preparation raw materials are easy to obtain, and the operation is simple and suitable for industrial production.

The application discloses hafnium / zirconium 2-pyridine carboxylate complexes, a preparation method and application thereof, and belongs to the technical field of compound preparation. The hafnium / zirconium 2-pyridine carboxylate complexes provided by the application have both the chelating characteristics of a ligand and the stability of hafnium and zirconium. The dielectric constant of the complexes is 7-9 at a medium-temperature stage (123-223 DEG C) and a low-medium frequency (100Hz-100kHz), the dielectric loss is extremely small, and the complexes can stably exist at 230 DEG C. Therefore, the complexes can be widely applied to the preparation of new energy automobile parts, power equipment precision insulation parts and industrial equipment dielectric insulation / transmission parts. The preparation method of the complexes is simple in operation and is beneficial to actual production.

Disclosed herein are compositions comprising (a) a pyridine carboxylate herbicide or an agriculturally acceptable N-oxide, salt, or ester thereof and (b) a PS II inhibitor herbicide or an agriculturally acceptable salt or ester thereof. Also disclosed herein are compositions comprising (a) a pyridine carboxylate herbicide or an agriculturally acceptable N-oxide, salt, or ester thereof, (b) a PS II inhibitor herbicide or an agriculturally acceptable salt or ester thereof, and (c) a HPPD inhibitor herbicide. Also disclosed herein are methods of controlling undesirable vegetation, comprising applying to vegetation or an area adjacent the vegetation or applying in soil or water to control the emergence or growth of vegetation (a) a pyridine carboxylate herbicide or an agriculturally acceptable N-oxide, salt, or ester thereof, (b) a PS II inhibitor herbicide or an agriculturally acceptable salt or ester thereof, and (c) optionally, a HPPD inhibitor herbicide.

Disclosed herein are compositions comprising (a) a pyridine carboxylate herbicide or an agriculturally acceptable N-oxide, salt, or ester thereof and (b) a synthetic auxin herbicide, an auxin transport inhibitor, agriculturally acceptable salts or esters thereof, or combinations thereof. Also disclosed herein are methods of controlling undesirable vegetation, comprising applying to vegetation or an area adjacent the vegetation or applying in soil or water to control the emergence or growth of vegetation (a) a pyridine carboxylate herbicide or an agriculturally acceptable N-oxide, salt, or ester thereof and (b) a synthetic auxin herbicide, an auxin transport inhibitor, agriculturally acceptable salts or esters thereof, or combinations thereof.