A New Mathematics Model of the Temperature Programmed Analysis Technology

以表面作用包括表面吸/脱附以及表面反应本征速率方程为基础,提出新的程序升温分析技术(TPAT)的数学模型。与经典的理论模型相比,这种新的TPAT理论模型更接近实际的程序升温分析实验过程。设计和进行特定催化剂的TPd、TPr及TPO实验,得到相应的程序升温谱图,采用新的TPAT理论模型模拟上述谱图,计算出相应的表面作用活化能等重要热力学参数。结果表明,新的理论模型具有良好的模拟性能,平均相对误差(Ard)小于1%。Based on the surface effect including surface adsorption/desorption and intrinsic kinetics rate equation,a new mathematical model of the temperature programmed analysis technology was proposed.This model is different from the classical TPAT theory models,which indicates much more coincidence with the actual reactions than other models.TPAT(TPD,TPR and TPO) experiments were designed and carried out to receive their profiles.Based on these profiles of TPAT and the simulated experiments,the novel theory model was designed and the thermodynamics parameters(such as activation energy,etc.) were deduced and calculated by this model.The results show that this model has excellent simulation with the actual experiments,and the average relative errors are easily controlled less than 1%

Synthesis of graphitic mesoporous carbons with high surface areas and theirapplications in direct methanol fuel cells

Synthesis of graphitic mesoporous carbons with high surface areas and theirapplications in direct methanol fuel cell

Preparation and characterization of radiation-grafted poly(tetrafluoroethylene-co-perfluoropropyl vinyl ether) membranes for alkalineanion-exchange membrane fuel cells

Preparation and characterization of radiation-grafted poly(tetrafluoroethylene-co-perfluoropropyl vinyl ether) membranes for alkalineanion-exchange membrane fuel cell

一种有序化气体扩散电极及其制备和应用

本发明涉及一种有序化气体扩散电极及其制备和应用，所述膜电极由气体扩散层和催化层组成，所述催化层为有序化催化层，其由于气体扩散层表面有序化阵列排布的导电聚合物纳米线及掺杂于导电聚合物纳米线表面的邻苯二甲酸二乙二醇二丙烯酸酯（PDDA）与Pt催化剂粒子相互作用而组成。本发明所述有序化膜电极具有贵金属Pt利用率高、稳定性高等优点，可有效降低燃料电池催化剂成本，提高燃料电池寿命；同时，本发明所述膜电极可有效增强燃料在催化层中的传质，从而提高燃料的利用率；本发明所述有序化膜电极可作为质子交换膜燃料电池、直接液体燃料电池和质子交换膜水型电解池用膜电极

一种多孔介质液汽迁移评价装置及其应用方法

一种多孔介质液汽迁移评价装置，包括第一加热板、液腔、样品架、汽腔和第二加热板；液腔和汽腔分别为二个密闭的腔体，于液腔的下壁面和汽腔的上壁面上分别设有通孔，作为液腔开口和汽腔开口；样品架为二个环形支架，二个环形支架分别相对置于待测多孔介质的上下两侧，环形支架与待测多孔介质紧密贴接；液腔和汽腔分别置于二个环形支架远离待测多孔介质的一侧；且液腔开口和汽腔开口分别对应于环形支架的中空部位；于液腔外壁面上设有第一加热板，所述第一加热板用于为液腔加热；于汽腔外壁面上设有第二加热板，所述第二加热板用于为汽腔加热。与现有技术相比，本发明装置结构简单，易于加工制造；测试过程简单、准确，可有效提供数据；测试范围广，可测试不同温度条件下不同液体在不同多孔介质中的液体迁移量，应用领域广泛，不受限制

自支撑Ca靶膜的制备

用真空蒸发方法成功地制备了自支撑 Ｃａ 靶。在充 Ａｒ 气手套箱中剥离靶膜。基片的选择、材料的清洗、快速操作和 Ａｒ 气保护是制靶的关键。A metal self supporting Ca target foil is successfully prepared by the vacuum evaporation method. The stripping of the foil is completed in a glove case filled with Ar gas. The choice of substrate, cleaning of materials, quick operation and protection of Ar gas are the key to get successful target