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Firstly, it is difficult to densify CeO2 based solid electrolyte materials and a sintering temperature above 1600℃is required to prepare dense CeO2 based solid electrolyte materials by the conventional solid-state reaction method;Secondly, doped ceria are brittle materials and have weak mechanica...

其一,CeO_2基电解质材料难以致密化,用常规的固态反应法制备的CeO_2基电解质粉体需要在1600℃以上烧结才能达到致密化;其二,CeO_2基电解质为脆性材料,机械强度低,使其容易在电池的制造及运行过程中由于热应力及机械应力而破裂;其三,CeO_2基电解质在燃料极一侧由于Ce4+还原为Ce3+出现电子导电,降低电池的输出电压和输出功率,影响电池的性能。

Magnesium carbonate was prepared by carbonization leaching from desiliconization slag of laterite nickel ore, and the content of NiO in the residue reached 2.96%.

以红土镍矿脱硅渣为原料,采用碳化、热解工艺制备出碳酸镁产品,并使NiO在碳化渣中富集到2.96%。

The molecular sieve is prepared in the steps: at the room temperature, hexadecyl trimethyl ammonium bromide is mixed and dissolved with the sodium hydroxide, and is added with TEOS in dropping way, and simultaneously added with Me metal salt water solution and lanthanum nitrate solution in dropping way; the pH value of the mixed solution is adjusted by acetic acid to be 10 to 11, and is mixed for 1 to 2 hours after being stabilized; the sol is moved into a polyfluortetraethylene bottle to be heated and crystallized for 2 days in the oven at the temperature of 100 DEG C; after filtering, washing and drying for nights, and being calcined in a muffle at the temperature of 550 DEG C for 3 to 7 hours, the dual-metal-atom improved MCM-41 mesoporous molecular sieve is obtained.

该分子筛的制备为室温下,将十六烷基三甲基溴化铵和氢氧化钠混合溶解,搅拌并滴加入TEOS,同时滴加入Me金属盐水溶液和硝酸镧溶液并搅拌,用乙酸调节pH值至10~11,稳定后搅拌1~2小时,溶胶转入聚四氟乙烯瓶中在100℃下烘箱水热晶化2天,经过滤、洗涤、干燥过夜,马弗炉550℃焙烧3-7h,得双金属原子改性MCM-41介孔分子筛产品。

The study was conducted to investigate the effects of heat treatment on flesh leatheriness of cold-stored loquat fruits and the possible mechanisms. Freshly harvested loquat fruits were pre-treated with hot air at 38℃ for five hours and then stored at (1±1)℃ for 35 days. Fruits firmness, extractable juice rate, the activities of phenylalanine ammonium-lyase, peroxidase, polyphenol oxidase and polygalacturonase that were related to flesh leatheriness, and contents of lignin and pectin were analyzed at seven-day intervals during storage.

为阐明热处理对冷藏枇杷果实木质化败坏的影响及其机理,该研究先将枇杷果实用38℃热空气处理5 h,然后在(1±1)℃下贮藏35 d,并每隔7 d测定果实硬度、出汁率、苯丙氨酸解氨酶、过氧化物酶、多酚氧化酶和多聚半乳糖醛酸酶等木质化相关酶活性及果胶和木质素含量的变化。

Relationship between Mesozoic granites and mesothermal gold mineralization in Xiaoqinling area has been studied by the typomorphic peculiarities of fluid inclusions and Sr, O and H isotopes of the main types of rocks.

对小秦岭地区与金矿化有关的主要地质体中流体包裹体叠加组合标型特征和有关地质体Sr、H、O同位素组成的标型性研究证明,小秦岭地区中生代中温热液金矿化流体与中生代花岗岩浆分界出的热液之间没有直接联系,成矿流体更可能是一种演化的大气降水。

To 2412Ma. but also certificates the multicycle and inheritance of tin mineralization in the region; moreover, it provides an instance for marine exhalative tin mineralization associated with mafic magmatic activity.

此举不仅将我国锡矿成矿时代从800Ma左右推前至2412Ma左右,而且证明了该区锡矿化的多旋回性和继承性,也提出了一个与镁铁质岩浆活动有关的热卤水锡矿化的实例。

The results show that myristic acid radical anion of precursor Zn0.78 Al0.2220.22c13h27COO0.81H2O can be almost completely replaced by complex anion [La(TiW11 O39)2]^3- under special controlled reaction conditions.

结果表明,该产物中[La(TiW11O39)2](上标 13-)配阴离子沿其长轴垂直于层板的方向分布于水滑石层板间,产物有规整的层状结构、大的层间距(d003=3.29nm)、良好的结晶度和热稳定性,产物对二甘醇与苯甲酸的酯化反应、二甘醇的脱水环化反应和苯甲醛的氧化反应具有良好的催化性能。

The relationship of the nitridation rate of Al-Mg-Si alloys with temperature from room temperature to 1300℃ was investigated by TG experiments.

通过程序升温法热重实验,考察了Al-Mg-Si合金从室温至1300℃范围氮化反应速率随温度的变化规律,实验验证了Al-Mg-Si合金的直接氮化符合阿累尼乌斯公式。

The feasibility of the equipment to measure Tg of amorphous powder is verified with a lot of experimentl results.The Tgs of some typical starches such as corn, pachyrhizus, buckwheat and pea in different water content are obtained by TDA. It is found that the water has plastic effect on starch and the Tg of starch decreases with the increase of water content. Through this study a quantitative expression is established to relate Tg and water content, and it is testified with experimental results for the sticky rice starch with different water content.

采用热膨胀法测定不同含水量下玉米、地瓜、荞麦、豌豆淀粉的玻璃化转变温度,得到了随着含水量的增加Tg降低的关系,探讨了水的增塑作用及影响机理,得到含水量与Tg的定量表达式,并用糯米淀粉的实验值对该关联式的有效性进行了验证,为预测不同含水量的淀粉的玻璃化转变温度及对淀粉的储藏加工提供了理论依据。

The results herein given are a preliminary approach in recent researches on the nodularity of pearlitic ductile cast iron and the relationship between the characteristic temperature values on the cooling curve and the nodularity is investigated.

本文介绍了热分析法测试珠光体球墨铸铁球化率的研究成果。指出冷却曲线上温度特征值与球化级别的对应关系。

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