搜索结果: 1-13 共查到“采矿工程 CO”相关记录13条 . 查询时间(0.328 秒)
为阐明煤在无氧环境下升温过程中CO的产生及变化规律，利用程序控制升温和时间分辨红外光谱分析方法，在无氧环境下对煤进行程序控制升温，采集并分析了煤无氧升温过程中CO产生及变化规律的时间分辨红外光谱谱图，揭示了煤无氧升温过程中CO的产生和变化规律，建立了描述CO生成量与煤质量分数之间函数关系的方程。结果表明：在30~370 ℃，由于热解温度不够高，无CO产生;在煤失重最快的370~650 ℃，CO生成...
A numerical simulation study of CO 2 injection for enhancing hydrocarbon recovery and sequestration in liquid-rich shales
CO2 EOR Tight formations Experimental design Response surface modeling Recovery of shale liquid CO2 sequestration
2018/4/2
Less than 10% of oil is usually recovered from liquid-rich shales and this leaves much room for improvement, while water injection into shale formation is virtually impossible because of the extremely...
采用等温热重法对比神木煤焦在900～1 050 ℃分别与CO 2和水蒸气气化的反应活性。为研究气化残炭反应性，分别采用均相模型、缩核模型、混合模型和修正体积模型对煤焦气化后期反应速率与碳转化率的关系进行拟合。结果表明：混合模型和修正体积模型对实验数据有很好的拟合效果；均相模型和缩核模型的拟合效果随气化温度和反应气氛而变化；不同模型预测煤焦分别与CO 2和水蒸气反应后期的活化能范围分别为200.65...
针对高瓦斯采空区漏风流内含有瓦斯的实际情况，自制了含瓦斯风流条件下煤的低温氧化实验系统，按拟定的配气方案开展了低温氧化实验，分析了CO的生成规律。结果表明：随氧气体积分数的降低或甲烷体积分数的升高，CO生成的初始温度滞后，相同温度时CO的生成量减小。因此，用新鲜空气来预测高瓦斯采空区的煤自燃状态，易造成错判、误判。根据气固多相反应动力学原理，分析了化学反应速率变化的原因，从而合理解释了实验结果。
On the Mechanism of Selective CO Oxidation on Nanosized Au/g-Al2O3 Catalysts
Inverse Gas Chromatography Rate Constants Au catalysts
2009/7/28
New findings give further information on the
mechanism of carbon monoxide selective oxidation
over g-alumina supported nanoparticle sized gold
catalysts. a) CO2 formation, increasing with rising
t...
Application of Heterogeneous Gold Catalysis with Increased Durability: Oxidation of CO and Hydrocarbons at Low Temperature
Oxidation of CO Hydrocarbons
2009/7/28
2% Au/Al2O3 catalysts were prepared by a novel
method involving Direct Anionic Exchange (DAE). The
method produces strong bonding of the gold complex
(HAuCl4) to the alumina support with no loss of...
Preparation of a Monolith-Supported Au/TiO2 Catalyst Active for CO Oxidation
cordierite monolith gold on titania CO oxidation
2009/7/28
The development of a method for making an
adherent coating of Au/TiO2 on a cordierite monolith
is described. The optimum method entails first
forming a wash-coat of TiO2 by combining a colloidal
d...
A Novel Internally Heated Au/TiO2 Carbon-Carbon Composite Structured Reactor for Low- mperature CO Oxidation
Au/TiO2 Carbon-Carbon
2009/7/28
A compact, internally heated, catalytic reactor is
demonstrated for the low-temperature oxidation of
carbon monoxide. Carbon nanofibres were grown
on carbon felt and used as a support material for
...
Properties of TiO2 Support and the Performance of Au/TiO2 Catalyst for CO Oxidation Reaction
gold titanium dioxide carbon monoxide oxidation
2009/7/28
Gold catalysts were prepared on TiO2 supports of
different phase structures (i.e., anatase, rutile and
biphasic), TiO2 crystal size (i.e., 9-23 nm), surface
and textural properties (i.e., hydration...
An unconventional Au/TiO2 PROX system for complete removal of CO from non-reformate hydrogen
Au/TiO2 PROX system CO non-reformate hydrogen
2009/7/28
Au-based catalysts, generally known for high activity
in the selective catalytic oxidation of CO to CO2 at
ambient temperatures, can play a significant role in
increasing the fuel cell system’s CO ...
Looking by grazing incidence small angle x-ray scattering at gold nanoparticles supported on rutile TiO2(110) during CO oxidation
gold nanoparticles rutile TiO2(110)
2009/7/28
The catalytic activity of oxide-supported gold
nanoparticles depends crucially on their size. The
present work describes a dedicated set-up in which
particle size is determined by grazing incidence...
Synthesis of High Performance Hydroxyapatite-Gold Catalysts for CO Oxidation
CO oxidation deposition-precipitation process
2009/7/28
Catalysts for low temperature CO oxidation were
prepared by decorating hydroxyapatite (HAp) ceramic
foam scaffolds with highly dispersed gold
nanocrystals using a deposition-precipitation (DP)
pro...
Role of promoting oxide morphology dictating the activity of Au/SiO2 catalyst in CO oxidation
Structure of gold/oxide interface its effect on CO oxidation
2009/7/28
The interfacial interaction of gold nanoparticles
deposited on either model SiO2/Si(100) or high
surface area amorphous or mesoporous silica with
minute amounts of promoter oxide like “active”
FeO...