丙烯腈

Production techniques and market analysis of fine chemical products synthesized from hydrocyanic acid

氢氰酸是丙烯腈的副产品，综合利用氢氰酸将会提高丙烯腈装置的经济效益。

The prepared supported palladium catalyst with ultra thin fiber morphology can hydrogenate olefin and nitrobenzene hydrogenation in high efficiency. The loss of noble metal was reduced and the quality of the product was improved for formation of chemical bond between metal and polymer.

本论文以电纺丝技术为基础，利用聚丙烯腈、苯乙烯-丙烯腈共聚物、聚乙烯基吡咯烷酮和壳聚糖衍生物等为载体，制备出了负载钯的超细纤维无纺布形态催化剂，并对其催化加氢性能进行了讨论研究。

A process for the hydrolysis of acrylonitrile to acrylic acid, and for the hydrolysis of methacrylonitrile to methacrylic acid, in high yield and at high concentration with high specificity is disclosed, wherein an enzyme catalyst is used.

本发明提供一种高产率、高专一性和高浓度的将丙烯腈水解为丙烯酸的方法和将甲基丙烯腈水解为甲基丙烯酸的方法。

The coordination process and structure between amidoxime modified polyacrylonitrile fiber and FeCl3 in aqueous solution were studied by using X-ray photoelectron spectroscopy, Fourier transforminfrared spectrometer, dynamic thermal mechanical analyzer, and electrical conductivity method, respectively.

在室温条件下应用偕胺肟改性聚丙烯腈纤维与FeCl3反应制备了聚丙烯腈纤维铁配合物，并分别使用X射线光电子能谱、傅立叶红外光谱、动态热机械分析和电导法对Fe-AO-PAN进行了表征以确定其组成结构。

Polyacrylonitrile fiber was modified into a chelating fiber containing amidoxime group by adding hydroxylamine, resulting from that nitrile group was transformed into amidoxime group.

以聚丙烯腈纤维为原料，加入羟胺试剂，将腈基转变为偕胺肟基团，使聚丙烯腈纤维改性成含有偕胺肟基团的螫合纤维。

An acid dyeable polyacrylonitrile blend fiber was prepared by blending polyacrylontrile and a copolymer syn-thesized from trihydroxy methyl-aminomethane containing basic groups and acrylonitrile raonomr via wet spinning process.

用含有碱性基团的丙烯酸氨基酯与丙烯腈单体共聚，其共聚物与聚丙烯腈共混，经湿法纺丝制备酸性染料可染PAN共混纤维。

Activity ratio of acrylonitrile-ammonium itaconic acid copolymerization system and the changes of AIA content in two methods of comnonomer adding were studied in this paper.

研究了丙烯腈－衣康酸铵共聚体系的竞聚率和不同加料方式下聚丙烯腈树脂中衣康酸铵含量的变化规律。

In the second section, with ketone and hydroxylamine hydrochloride as the starting materials, 3-aminopropanol is prepared via three steps including reaction of ketone and hydroxylamine hydrochloride , condensation of ketoxime and acrylonitrile, and hydrogenation cracking of condensation product.

第二是3-氨基丙醇的制备，由酮肟丙烯睛缩合物催化氢化裂解制得：即先以酮、盐酸羟胺为起始原料在碱性条件下合成酮肟，再与丙烯腈反应生成酮肟丙烯腈缩合物后经催化氢化裂解制得3-氨基丙醇。

In order to compare with normal wet spinning PAC fibre, the morphological characteristics, including void siz, distribution, volume, shape, location, surface crevices etc. of the polyblend fibre and their change during stretching, was studied by SEM, SAXS, porosimeter and water retention methods.

用SEM、SAXS和保水率测定等方法，在与普通湿纺法聚丙烯腈纤维对比的基础上，对丙烯腈共混纤维在拉伸前后的形态特性，包括孔穴大小、体积、形状、位置和表面裂缝等进行了研究。

The results showed the pyrolytic process of polyacrylonitrile film can be divided into three stages.

用非等温热重法分析了聚丙烯腈薄膜的热解过程，探讨了升温速率对聚丙烯腈薄膜热重曲线和失重速率峰值的影响。

Do you know, i need you to come back

你知道吗，我需要你回来

Yang yinshu、Wang xiangsheng、Li decang,The first discovery of haemaphysalis conicinna.

1〕 杨银书，王祥生，李德昌。安徽省首次发现嗜群血蜱。