1) Carbon deposition from CH 4
CH4积炭
2) CH_4
CH4
1.
Batch incubation experiments in aid of anaerobic incubation flask were conducted to study the anaerobic degradation and volatilization of hexachlorobenzene(HCB),the change of pH in soil,the emission of CH_4 and CO_2,and the volatilization of HCB in the Hydragric Acrisol and Gleyi-Stagnic Anthrosol added with acetic acid,glucose and citric acid.
结果表明,8周内红壤性水稻土中HCB减少了约20%~44%,加入乙酸抑制HCB的降解,表明低pH条件不利于脱氯反应,加入葡萄糖和柠檬酸在前期抑制后期则促进HCB的降解;乌栅土中HCB减少了约21%~23%,加入小分子有机质对其降解没有明显的效果;六氯苯降解的主要产物为五氯苯(PCB),最终检测到红壤性水稻土中PCB为23~96μg/kg,乌栅土中为64~92μg/kg;HCB的降解与CH4和CO2的释放量在统计学上没有显著的相关性;2种土壤中,外加小分子有机碳均减少了HCB的挥发作用,且红壤性水稻土中HCB的挥发比乌栅土中更强,表明土壤有机质是影响HCB挥发的重要因子。
2.
The effects of the oxides of Mg and Ce on the CO_2 reforming of CH_4 over Ni/nano-Al_2O_3 catalysts were investigated.
考察了助剂Mg、Ce修饰的纳米A l2O3负载N i催化剂对CH4、CO2重整反应制合成气的反应性能影响,采用正交实验筛选催化剂。
3) methane
[英]['mi:θeɪn] [美]['mɛθen]
CH4
1.
Coal mine gas at the ventilation outlet of coal mines can hardly be made use due to its low concentration of methane,which is usually emitted to the atmosphere and cause pollution and loss of energy.
煤矿通风口处瓦斯气的CH4浓度太低无法回收利用,只能排往大气中,既浪费能源,又污染环境。
2.
Utilizing the data of the greenhouse gases(GHGs) of atmosphere from 1991 to 2004 provided by NOAA Earth System Research Laboratory,including carbon dioxide and methane data at Korea of Tae-ahn Peninsula,Mongolia of Ulaan Uul and China of Waliguan stations,the atmospheric concentrations and their trends of GHGs in East Asia in 14 years were analyzed.
利用NOAA Earth System Research Laboratory提供的1991─2004年Tae-ahn(韩国),Ulaan Uul(蒙古)以及瓦里关(中国)的大气温室气体CO2和CH4的数据,对东亚地区大气温室气体的浓度特征及变化趋势进行研究。
3.
The diffusion of methane and carbon dioxide in a-MCMB prepared by the authors, was investigated by using the intelligent gravimetric analyzer apparatus (IGA-003, HIDEN) at 298 K and 258 K.
采用高精度的重力分析仪(IGA003,HIDEN)对天然气主要成分CH4和CO2杂质在活性炭微球材料内的扩散性质进行了研究。
4) CH 4
CH4
1.
The mechanisms of the reaction NH 2+CH 4NH 3+CH 3, NH 2+CH 4CH 3NH 2+H have been studied at B3LYP/6-311G * level of density functional theory.
在密度泛函理论 B3LYP/6 -31 1 G*水平下 ,研究了 NH2 与 CH4的反应机理 。
2.
The reaction of CH 4+MgO→Mg+CH 3OH has been studied on a singlet state potential energy curve at B3LYP/6-311+G (2d,2p) level.
在B3LYP/ 6 311+G(2d ,2p)水平上计算了MgO +CH4 →Mg +CH3 OH反应的单态势能曲线 。
3.
The separation of CH 4 /N 2 gas mixture for improve the concentration of CH 4 by pressure swing adsorption (PSA) is studied.
采用变压吸附技术进行CH4 /N2 气体混合物的分离研究 ,以提高混合气中CH4 的浓度 。
5) Coking
[英][kəuk] [美][kok]
积炭
1.
Effect of Modifying Condition on Coking Content of Catalyst Used in Catalytic Pyrolysis Process;
改性条件对催化裂解催化剂积炭的影响
2.
Study on coking deactivation of mordenite on isopropylation of naphthalene;
丝光沸石催化萘异丙基化反应的积炭失活研究
3.
Operation of reforming catalysts in hydrogen plant and coking;
制氢转化催化剂的使用与积炭
6) carbon deposition
积炭
1.
Preventing carbon deposition of Cu-Ce-Zr-O/YSZ anodes operating with methane in solid oxide fuel cells;
Cu-Ce-Zr-O/YSZ阳极材料以甲烷为燃料时的抗积炭性能
2.
On the basis of a number of recent references,the influencing factors of carbon deposition over catalysts were reviewed in terms of mechanism.
综述了煤与石油化工中催化剂积炭产生的机理,探讨了温度、气氛、催化剂载体、活性组分、助剂对催化剂积炭的影响,并提出选择与载体具有电子效应及强相互作用的廉价金属催化剂、进行催化剂预硫化和催化剂扩孔是今后降低催化剂积炭失活的研发方向。
3.
The relationship between reaction time and carbon deposition on catalyst was analyzed,and the activity of reactivated catalyst was also evaluated.
在DLG-1型催化剂上进行了液化石油气(LPG)的低温芳构化反应研究,考察了反应温度、氢分压及进料液体体积空速对LPG制取高辛烷值汽油反应性能的影响,分析了反应时间与催化剂积炭量的关系,并对再生催化剂的反应活性进行了评价。
补充资料：积炭
分子式：
CAS号：
性质：在催化剂表面上含碳物质的沉积称为积炭或结焦。积炭造成催化剂孔径减小或孔口缩小，使反应物分子不能扩散进入孔中，因此又称为堵塞。积炭会使催化剂活性降低，但有的催化剂却要通过部分结焦的预处理，改善孔径分布，以提高选择性。
CAS号：
性质：在催化剂表面上含碳物质的沉积称为积炭或结焦。积炭造成催化剂孔径减小或孔口缩小，使反应物分子不能扩散进入孔中，因此又称为堵塞。积炭会使催化剂活性降低，但有的催化剂却要通过部分结焦的预处理，改善孔径分布，以提高选择性。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条