Recent Progress in Direct Partial Oxidation of Methane to Methanol

The direct conversion of methane to methanol has attracted a great deal ofattention for nearly a century since it was first found possible in 1902, and it is still achallenging task. This review article describes recent advancements in the direct partial oxidationof methane to methanol. The history of direct oxidation of methane and the difficulties encounteredin the partial oxidation of methane to methanol are briefly summarized. Recently reporteddevelopments in gas-phase homogeneous oxidation, heterogeneous catalytic oxidation and liquid phasehomogeneous catalytic oxidation of methane are reviewed.

中国人口老龄化对金融资产价格影响研究

文章对国内外相关文献进行系统的回顾,建立了人口老龄化对金融资产价格作用的机理和路径。利用中国1990~2015年历史数据建立人口老龄化和金融资产价格之间关系的向量自回归(Vector Autoregression,VAR)模型,实证分析结果表明人口老龄化对金融资产价格有稳定的负向影响。从预测角度,脉冲分析结果进一步证实,如果对人口老龄化程度添加1个额外的正向冲击,将对金融资产价格产生长期的负向影响。文章认为中国人口老龄化在未来不会导致金融资产价格崩溃,但金融资产回报率的下降需要引起警惕,因为未来退休人口将更多地依赖个人储蓄及资产回报,而非传统的退休金。文章对中国未来金融资产价格的下降趋势提出预警,提出政府应该前瞻性地从人口和金融两方面加强宏观管理,做出政策选择。