碳化

The aromatization performance of Mo/HZSM-5 with different molybdenum species has not been well investigated.

另一方面，使用MoO_3／HZSM-5进行甲烷芳构化反应时，反应过程中钼物种会被还原和碳化形成多种钼物种，但关于这些不同钼物种的Mo／HZSM-5催化剂的芳构化性能尚不清楚或存在争议。

Artificial SiC: black silicon carbon, green silicon carbon, cerium silicon carbide, boron carbide

sup2；人造碳化硅：黑碳硅、绿碳硅、铈碳化硅、碳化硼

The research showed that one of the main causes of forming soot was excessive carbonization during depositing pyrolytic carbon.

研究表明：热解碳沉积过程中炭黑形成的主要原因之一是反应物气体在气相中过度碳化。

By using the a device being similar to water segregator and by controlling the temperature, cyclization of the intermediate product in chloroform reduced carbonization and gave 2-dodecaneanthraquinane in 68.1% yielding.

以十二烷基苯和苯酐为起始原料，经酰基化、关环和磺化三步反应合成了3-十二烷基蒽醌磺酸；并进一步改进和优化了合成工艺条件：即在催化剂三氯化铝过量50%并有三乙胺存在的条件下，中间体2-（4-十二烷基苯甲酰基）苯甲酸收率为72.45%；关环反应采用氯仿作溶剂，利用类似分水器的装置有效控制反应温度以减少碳化，2-十二烷基蒽醌的收率为68.1%。

The thermodynamic analysis of carbothermal reduction of perovskite phase in the blast furnace slag bearing titania is carried out.

总结TiO2的碳热还原法制取碳化钛的研究成果，并对高炉钛渣中钙钛矿的碳热还原进行了热力学分析。

There is an activation process for passivated alumina supported molybdenum nitride and carbides catalysts at the initial stage of hydrazine decomposition.

在肼分解反应初期，钝化态的氮化钼和碳化钼催化剂有一个活化的过程，随着启动次数的增加，催化剂的初活性逐渐提高，最后达到稳定。

Transition metal borides and inorganic boron-containing compounds, such as TiB〓, BN, B〓C and BP, are one of the most important groups for application in high-temperature performance, electronics and catalysts. Traditionally, they were prepared by high-temperature reactions; however, the products were beyond nanometer scale.

中文题名溶剂热合成硼化物及非金属含硼化合物纳米材料副题名外文题名论文作者谷云乐导师钱逸泰学科专业无机化学研究领域\研究方向学位级别博士学位授予单位中国科学技术大学学位授予日期2003 论文页码总数70页关键词纳米材料硼化物溶剂热合成馆藏号BSLW /2003 /O613 /6 硼化物、非金属含硼化合物功能材料（如硼化钛、氮化硼、碳化硼和磷化硼等）通常具有高硬度、高熔点、机械强度大、高温化学稳定性好等一系列优良性能，有些还具有奇异的光、电、磁、热学性能和催化活性，是一类最富潜力的非氧化物高温结构材料、电子材料和催化材料。

Since 2002, the company has developed various types of more than 20 kind of the dry and wet type of sandblast machine altogether (aluminium quality, copper, iron, gather urethane sandblast machine), more than 100 kind of nuzzle (including in wolfram steel, carbonization boron, carborundum, compound pottery and steel nuzzle), and other many kinds of sandblasting machine fittings, the great one has met lots of sandblast machine factory and sandblast sales departments to many kinds of demands for sandblast machine.

从2002年开始，公司共开发了二十几种各式干湿型喷砂枪（铝质，铜质，铁质，不锈钢，聚氨酯喷砂枪），一百多种各规格喷咀（钨钢，碳化硼，碳化矽，复合陶瓷及钢质喷咀）以及其他多种喷砂机配件，极大的满足了各喷砂机械厂及喷砂销售部对多种喷砂配件的需求。

Melting point 3410 ℃, boiling point 560 ℃, relative density of 1935, F the external electronic structure of 5d46s2, in the chemical reaction time is very easy to lose 1-6 electronic, but also can get 1-2 electronic, so oxidation number of 0,± 1,± 2, 3, 4 , 5 and 6, with 6 price of the most stable compounds, such as WO3 does not dissolve in water, the air will form in the tungsten trioxide thin protective layer of tungsten, tungsten with fluorine at room temperature, chemical combination, red hot when there is no moisture and Bromine iodide together, red hot when you can and water reaction WO3, at room temperature reaction of tungsten with aqua regia, but the hot concentrated hydrochloric acid and sulfuric acid can only be played with its weak response, but molten nitrate, nitrite, too Hydrogen peroxide, sulfur steam, steam and other phosphorus can play intense reaction, high temperature can not be carbon, boron and silicon reaction of binary compounds, widely used in industrial tungsten steel and tungsten carbide, pure tungsten filament is used to the system, and X-ray tube Tube heating components, semiconductor components can be prepared tungsten silicide, tungsten industrial production is white or black tungsten ore tungsten ore refining.

熔点3410℃，沸点560℃，相对密度1935，F外围电子结构为5d46s2，在化学反应时很容易丢掉1—6个电子，也能得到1—2个电子，所以氧化数为0、±1、±2、＋3、＋4、＋5和＋6，以＋6价化合物最稳定，如WO3不溶于水，空气中的钨会形成薄层三氧化钨保护层，钨能与氟在室温下化合，红热并无潮气时能与溴、碘化合，红热时还能和水反应生成WO3，室温下钨可与王水反应，但热的浓盐酸和硫酸只能与其起微弱反应，但对熔融的硝酸盐、亚硝酸盐、过氧化氢、硫蒸汽、磷蒸汽等能起激烈反应，高温下不能与碳、硼和硅反应生成二元化合物，工业上广泛使用钨钢和碳化钨，纯钨用来制灯丝、电子管和X射线管的发热元件，硅化钨可制半导体元件，钨工业生产是将白钨矿石或黑钨矿石精炼。

Steel balls tend to flatten slightly more than carbide balls, resulting in larger indentation and lower Brinell number than shown by a carbide ball.

钢球(标准或Hultgren)与碳化球相比会更加容易出现轻微的扁平，导致比碳化球更大的压痕和更小的布氏值。

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。