碳排放权交易机制、家族控制与绿色创新效率

随着“双碳”战略持续推进,碳排放权交易机制作为一种市场型环境规制工具,通过不同主体根据自身需求对碳排放限额进行交易,从而实现碳配额资源的有效配置。碳排放权交易机制基于外部组织合法性的压力机制与内部社会情感财富的动力机制两方面对家族企业绿色创新效率产生重要影响。本文选取2010—2019年我国2417家家族企业,建立多期DID面板模型,从家族控制视角探讨了碳排放权交易机制对家族企业绿色创新效率的影响。研究发现,碳排放权交易机制促进了家族企业绿色创新效率,家族控制弱化了两者间的正向关系。当家族企业处于低CO2排放额度地区且实际控制人代数为一代时,两者关系及家族控制对两者关系的调节效应更显著。机制分析发现,碳排放权交易机制宏观层面通过降低规制强度与碳排强度、微观层面通过提高战略差异度与信息透明度来促进家族企业绿色创新效率。因此,本文从低碳资产的“提质增效”、风险管理和低碳技术推广三个方面改善家族企业绿色创新效率,以最终实现家族企业的基业长青和可持续发展。     

煤电市场对火电行业SO2排污交易市场的影响分析

以电力行业二氧化硫排污交易为例,探讨了外部市场(煤炭价格、电力价格)的变化对企业在排污交易市场中的决策影响,以及整个排污交易市场的表现.基于一般均衡框架的分析结果表明,煤炭和电力的价格会显著影响排污交易市场的价格和绩效;在我国目前煤电价格体系下,煤炭价格的持续上升,将会大大降低配额的价格和市场活跃程度.     

Emission reduction characteristics of a catalyzed continuously regenerating trap after-treatment system and its durability performance

The primary purpose of this study was to investigate the effect of a catalyzed continuously regenerating trap(CCRT)system composed of a diesel oxidation catalyst(DOC)and a catalyzed diesel particulate filter(CDPF)on the main gaseous and particulate emissions from an urban diesel bus,as well as the durability performance of the CCRT system.Experiments were conducted based on a heavy chassis dynamometer,and a laboratory activity test as well as X-ray photoelectron spectroscopy(XPS)test were applied to evaluate the changes of the aged CCRT catalyst.Results showed that the CCRT could reduce the CO by 71.5%and the total hydrocarbons(THC)by 88.9%,and meanwhile promote the oxidation of NO.However,the conversion rates for CO and THC dropped to 25.1%and 55.1%,respectively,after the CCRT was used for one year(～60,000 km),and the NO oxidation was also weakened.For particulate emissions,the CCRT could reduce 97.4%of the particle mass(PM)and almost 100%of the particle number(PN).The aging of the CCRT resulted in a reduced PM trapping efficiency but had no observable effect on the PN;however,it increased the proportion of nucleation mode particles.The activity test results indicated that the deterioration of the CCRT was directly relevant to the increase in the light-off temperatures of the catalyst for CO,C_3H_8 and NO_2.In addition,the decreased concentrations of the active components Pt~(2+) and Pt~(4+) in the catalyst are also important factors in the CCRT deterioration.