搜索结果: 1-15 共查到“工学 FT-IR”相关记录22条 . 查询时间(0.095 秒)
以东胜煤田色拉一号井田2号煤层长焰煤为研究对象,利用浮沉离心法富集其镜质组。基于工业分析、元素分析、13C-NMR、FT-IR、谱图分峰拟合技术和化学分析测试,求取镜煤及一系列热解煤含氧官能团结构与含量参数,从不同角度研究了含氧官能团的分布规律与演化特点。镜煤中羧基、羰基含量分别为8.91~10.90 mol/kg、1.61~1.79 mol/kg,随热解温度升高羧基显著减少。热解作用促使以端基形...
基于FT-IR的木质碳纤维原丝固化增强机理的研究
FT-IR 木质碳纤维原丝 固化 增强机理
2013/5/2
以甲醛为固化剂,盐酸为催化剂,固化处理木材液化物初纺纤维后得到木质碳纤维原丝。利用FT-IR考察了盐酸浓度、固化时间、升温速率对固化后木质碳纤维原丝化学结构变化的影响,并分析了原丝的固化增强机理。结果表明:随盐酸浓度和固化时间的增加,原丝1610~1510、1455、900~650 cm-1 处吸收峰强度都逐渐降低;随升温速率的增加,原丝3423、 2925 cm-1 处吸收峰逐渐减弱,1610~...
Structural Characterization of Lignins Isolated from Caragana sinica Using FT-IR and NMR Spectroscopy
Caragana sinica Lignin Structural characterization FT-IR NMR
2012/4/16
In order to efficiently explore and use woody biomass, six lignin fractions were isolated from dewaxed Caragana sinica via successive extraction with organic solvents and alkaline solutions. The ligni...
中变质煤结构演化的FT-IR分析
中变质煤 煤结构 FI-IR分析 炼焦用煤
2012/10/19
选择5种有代表性的炼焦用煤，分属不同地方不同煤种的中等变质程度煤，在实验室条件下利用美国生产的FTS-165傅立叶变换红外光谱仪对其进行FT-IR分析，采用WIN-IR软件中的谱图解叠子程序针对煤特有的结构性质进行研究。结果表明:煤中存在5种类型的羟基，其与氧碳原子比（O/C）的关系较为复杂;随着煤中氧含量的减少，碳含量的增高，煤中各类脂肪类物质增加，在肥煤阶段达到最大然后减少;煤中含氧官能团的变...
Structural Characterization of Lignins Isolated from Caragana sinica Using FT-IR and NMR Spectroscopy
Caragana sinica Lignin Structural characterization FT-IR NMR
2012/4/17
In order to efficiently explore and use woody biomass, six lignin fractions were isolated from dewaxed Caragana sinica via successive extraction with organic solvents and alkaline solutions. The ligni...
Determination of polymer content in energetic materials by FT-IR
Explosives HMX FT-IR TG ATR Viton quantification
2010/10/25
A new methodology was developed to characterize and to quantify the polymer content in PBX (HMX/Viton) by Fourier Transform Infrared Spectroscopy (FT-IR), using the Termogravimetric analysis (TG) as r...
FT-IR Spectroscopic Study of the Reaction Mechanism for Selective Reduction of NO over Sol-gel Prepared In2O3-Ga2O3-Al2O3 Catalysts
Nitrogen monoxide selective reduction Propene Gallium oxide catalyst
2009/7/24
The catalytic activity of Ga2O3-Al2O3 for the selective reduction of NO with propene was inhibited by the presence of H2O, whereas the catalytic activity of In2O3-Ga2O3-Al2O3 was significantly promot...
Hydrogenation of Dicarboxylic Acid Diesters to Corresponding Dialdehydes over ZrO2 Based Catalysts (Part 2) Analysis of Catalyst Surface Using Diffuse Reflectance FT-IR and CP/MAS 13C-NMR Spectroscopy
Diester hydrogenation Zirconia catalyst FT-IR Reaction mechanism
2009/7/24
The adsorption species on ZrO2 or Cr-ZrO2 catalyst in the hydrogenation of dimethyl benzenedicarboxylates as well as benzoic acid were characterized by diffuse reflectance FT-IR and CP/MAS 13C-NMR spe...
Photocatalytic Degradation of Organic Compounds on TiO2 Powders —FT-IR Investigation of Surface Reactivity and Mechanistic Aspects—
Photodegradation Organics Titanium (IV) oxide TEM
2009/7/24
This review examines a series of studies investigating the molecular phenomena occurring on the surface of TiO2, in the dark and under ultra violet spectroscopy (UV) irradiation, in processes intended...
Rapid Quantitative Analysis of the Major Components in Soymilk Using Fourier-Transform Infrared Spectroscopy（FT-IR）
FT-IR ATR soymilk
2009/6/18
Fourier-transform infrared spectroscopy (FT-IR) on attenuated total reflectance (ATR) sampling was used for the quantitative analysis of the major components (protein, lipid, and sugar) in soymilk. Si...
用FT--IR红外光谱法快速测定聚乙烯共聚物中的甲基含量
FT--IR 红外光谱法 聚乙烯共聚物 甲基含量
2009/5/19
用FT--IR红外光谱法快速测定聚乙烯共聚物中的甲基含量。
时间分辨FT-IR光谱法分析卷烟侧流烟气中气相物
时间分辨 FT-IR光谱法 卷烟 侧流烟气
2009/4/7
卷烟侧流烟气是卷烟材料的不完全燃烧和裂解的结果。对燃烧/裂解产物应用中红外时间分辨光谱法（TRS）监测可以使我们更好地了解这些过程。多通道FT-IR通过测定特有的键的旋转来测定气相物中CO和NO。利用偏最小二乘法（PLS）通过用某一特定振动方式的所有气相旋转键和补偿了烟气中存在的其它化合物的影响进行了简化和改进。本研究旨在揭示建立时间分辨、多元物分析和使用多变量替代单一变量红外校正技术的优越性。三...
Changes in the Acid Value of Butter During Storage at Different Temperatures as Assessed by Standard Methods or by FT-IR Spectroscopy
Standard Methods FT-IR Spectroscopy
2008/11/27
Three different types of polish commercial butters, namely: light, regular and high fat content were under study. Studied samples were stored at two different temperatures (5 or 20°C) for a period of ...
Changes in the Acid Value of Butter During Storage at Different Temperatures as Assessed by Standard Methods or by FT-IR Spectroscopy
Acid Value Assessed by Standard Methods
2016/5/31
Three different types of polish commercial butters, namely: light, regular and high fat content were under study. Studied samples were stored at two different temperatures (5 or 20°C) for a period of ...