Research on the Construction of Industrial Catalysis Course Under the Background of Specialty-Innovation Integration

“Specialty-innovation integration”is a positive response of higher education to economic and social development needs,and it is also an inherent requirement for the reform and development of higher education.This paper discusses the construction of an“industrial catalysis”curriculum system under the background of specialty-innovation integration.Overall,it raises students’comprehensive quality from three aspects,including teaching content,teaching method,and the concept of specialty-innovation integration,aiming to cultivate students as the innovative talents required by the development of the era for national and regional development.

Mesoporous MnO_(2)nanosheets for efficient electrocatalytic nitrogen reduction via high spin polarization induced by oxygen vacancy

The electrochemical N_(2)reduction reaction(NRR)represents a green and sustainable route for NH_(3)synthesis under ambient conditions.However,the mechanism of N_(2)activation in the electrocatalytic NRR remains unclear.Herein,we found that the high spin state Mn^(3+)-Mn^(3+)pairs induced by oxygen vacancy in MnO_(2)nanosheets greatly enhance the catalytic activities.The strong electron transfer between d orbital of Mn and orbital of N2 forces the N_(2)to be of radical nature,which activates the hydrogenation process and weakens the N≡N bond.Based on the density functional theory(DFT)calculation results,we precisely designed mesoporous MnO_(2)nanosheets with rich oxygen vacancies via using methyltriphenylphosphonium bromide(MPB)to induce more Mn^(3+)-Mn^(3+)pairs(Mn^(3-3)-MnO_(2)),which can achieve a fairly high ammonia yield of up to 147.2μg·h^(−1)·mgcat−1.at−0.75 V vs.reversible hydrogen electrode(RHE)and a high Faradaic efficiency(FE)of 11%.Furthermore,these mesoporous MnO_(2)nanosheets exhibit the superior durability with negligible changes in both NH3 yield and FE after a consecutive 6-recycle test and the current density electrolyzed over a 24-hour period.Our findings offer an approach to designing highly active transition metal catalysts for electrocatalytic nitrogen reduction.

Technological Innovation, Regional Heterogeneity and Marine Economic Development——Analysis of Empirical Data Based on China’s Coastal Provinces and Cities

In order to analyze the impact of technological innovation and regional differences in marine economy on the development of marine economy,the paper uses the regional panel data of China’s total marine production value from 2006 to 2015,and uses the Theil index to measure regional differences in the marine economy based on the logarithm of the Cobb-Douglas production function.Finally,the paper establishes a random effect panel data model for empirical analysis.The research indicates that the regional differences in the marine economy show a narrowing trend,which promotes or inhibits the development of the marine economy;The extent of the impact of regional differences in the marine economy on the development of the marine economy is inconsistent;Scientific and technological innovation in various regions has promoted the development of marine economy.