Hierarchically porous carbon materials are promising for energy storage,separation and catalysis.It is desirable but fairly challenging to simultaneously create ultrahigh surface areas,large pore volumes and high N co...Hierarchically porous carbon materials are promising for energy storage,separation and catalysis.It is desirable but fairly challenging to simultaneously create ultrahigh surface areas,large pore volumes and high N contents in these materials.Herein,we demonstrate a facile acid-base enabled in situ molecular foaming and activation strategy for the synthesis of hierarchically macro-/meso-/microporous N-doped carbon foams(HPNCFs).The key design for the synthesis is the selection of histidine(His)and potassium bicarbonate(PBC)to allow the formation of 3D foam structures by in situ foaming,the PBC/His acid-base reaction to enable a molecular mixing and subsequent a uniform chemical activation,and the stable imidazole moiety in His to sustain high N contents after carbonization.The formation mechanism of the HPNCFs is studied in detail.The prepared HPNCFs possess 3D macroporous frameworks with thin well-graphitized carbon walls,ultrahigh surface areas(up to 3200 m^2 g^-1),large pore volumes(up to 2.0 cm^3 g^-1),high micropore volumes(up to 0.67 cm^3 g^-1),narrowly distributed micropores and mesopores and high N contents(up to 14.6 wt%)with pyrrolic N as the predominant N site.The HPNCFs are promising for supercapacitors with high specific capacitances(185-240 F g^-1),good rate capability and excellent stability.They are also excellent for CO2 capture with a high adsorption capacity(~4.13 mmol g^-1),a large isosteric heat of adsorption(26.5 kJ mol^-1)and an excellent CO2/N2 selectivity(~24).展开更多
The chemical pesticidesmanufacturing sectorachieved rapid developmentin 2006.According to dataprovided by the National Bu-reau of Statistics,China had723 chemical pesticide enter-prises of considerable scale(all state...The chemical pesticidesmanufacturing sectorachieved rapid developmentin 2006.According to dataprovided by the National Bu-reau of Statistics,China had723 chemical pesticide enter-prises of considerable scale(all state-owned enterprises,and non state-owned enter-prises with sales over RMB5.0 million in 2005).The indus-trial total production展开更多
The development speed of the synthetic materials manufacturing sector in 2006was much slower than in 2005.According to data provided bv the National Bu-reau of Statistics,China had 1718 synthetic materials manufacturi...The development speed of the synthetic materials manufacturing sector in 2006was much slower than in 2005.According to data provided bv the National Bu-reau of Statistics,China had 1718 synthetic materials manufacturing enter-prises of considerable scale(all state-owned enterprises,and non state-ownedenterprises with sales over RMB5.0 million in 2005).Their total asset value wasRMB288.627 billion,an increase of 7.50% over the previous year.The salesrevenue was RMB333.853 billion,down 0.37%.The total profit was RMB9.562billion,a drop of 46.33%.Total emplovment was 310 600.a drop of 0.56%展开更多
According to data provided by theNational Bureau of Statistics,Chinahad 3 031 enterprises of considerablescale (all state-owned enterprises,and non state-owned enterpriseswith sales over RMB5.0 million in2005) in the ...According to data provided by theNational Bureau of Statistics,Chinahad 3 031 enterprises of considerablescale (all state-owned enterprises,and non state-owned enterpriseswith sales over RMB5.0 million in2005) in the manufacturing sector ofcoatings,inks,pigments and similarproducts in 2006 and the employmentwas 316 200.The total asset valuewas RMB144.591 billion,an increaseof 18.95% over the previous year.Theindustrial total output value wasRMB 191.935 billion,an increase of 26.19%.The industrial added value展开更多
The specialty chemicals manufacturing sector maintained steady development in 2006.The growth of its major economic indexes was more than 30%.According to data provided by the National Bureau of Statistics,China had 5...The specialty chemicals manufacturing sector maintained steady development in 2006.The growth of its major economic indexes was more than 30%.According to data provided by the National Bureau of Statistics,China had 5512 specialty chemical manufacturing enterprises of considerable scale(all state-owned enterprises,and non state-owned enterprises with sales over RMB5.0 million in 2005).The total asset value was RMB306.501 billion,an increase of 21.82% over the previous year.The sales revenue was RMB426.685 billion,an increase of 34.65%.The total profit was RMB28.528 billion,an increase of 32.91%.The total employment was 823 800,an increase of 6.94%.展开更多
1 Economic functioning of petroleum and chemical industry in 2007 The industrial output value(current price)accomplished by the petroleum and chemical industry of China in 2007 was RMB5.3 trillion,an increase of 22.5%
In April 2007,China’s petroleum andchemical industry remained up trendin production.Among the 65 types ofpetrochemical products that havebeen tracked by CPCIA (China Petro-leum and Chemical IndustryAssociation),the o...In April 2007,China’s petroleum andchemical industry remained up trendin production.Among the 65 types ofpetrochemical products that havebeen tracked by CPCIA (China Petro-leum and Chemical IndustryAssociation),the output of 61 typesincreased compared with April 2006,展开更多
CPCIA reported the economic recovery ofChinese petrochemical industry speeded upin September, with high growth in productionand improvement in operation rate. Demandfor some major chemicals went warmer,prices remained...CPCIA reported the economic recovery ofChinese petrochemical industry speeded upin September, with high growth in productionand improvement in operation rate. Demandfor some major chemicals went warmer,prices remained steady, the investment in theindustry increased continuously at a highspeed and the year-on-year drop in importsand exports was narrowed.展开更多
According to the latest report of CPCIA,driven by the improved macro economy,China’s petroleum and chemical industry acceleratedits recovery steps in August, featuredwith increased output, narrowed fall ofproduction ...According to the latest report of CPCIA,driven by the improved macro economy,China’s petroleum and chemical industry acceleratedits recovery steps in August, featuredwith increased output, narrowed fall ofproduction value, recovered demand for majorbulk chemicals, steady prices and the rapidlygrew investment. However, some sectorsin this industry operated well bellow theirfull capacities, the petrochemical market werestill dull, exports were blocked, and the investmentin some oversupply sectors in-展开更多
基金the National Natural Science Foundation of China(Nos.21875153,21501125)the Natural Science Foundation of Jiangsu Province(BK20150312)the Jiangsu Shuangchuang Team Program is appreciated.
文摘Hierarchically porous carbon materials are promising for energy storage,separation and catalysis.It is desirable but fairly challenging to simultaneously create ultrahigh surface areas,large pore volumes and high N contents in these materials.Herein,we demonstrate a facile acid-base enabled in situ molecular foaming and activation strategy for the synthesis of hierarchically macro-/meso-/microporous N-doped carbon foams(HPNCFs).The key design for the synthesis is the selection of histidine(His)and potassium bicarbonate(PBC)to allow the formation of 3D foam structures by in situ foaming,the PBC/His acid-base reaction to enable a molecular mixing and subsequent a uniform chemical activation,and the stable imidazole moiety in His to sustain high N contents after carbonization.The formation mechanism of the HPNCFs is studied in detail.The prepared HPNCFs possess 3D macroporous frameworks with thin well-graphitized carbon walls,ultrahigh surface areas(up to 3200 m^2 g^-1),large pore volumes(up to 2.0 cm^3 g^-1),high micropore volumes(up to 0.67 cm^3 g^-1),narrowly distributed micropores and mesopores and high N contents(up to 14.6 wt%)with pyrrolic N as the predominant N site.The HPNCFs are promising for supercapacitors with high specific capacitances(185-240 F g^-1),good rate capability and excellent stability.They are also excellent for CO2 capture with a high adsorption capacity(~4.13 mmol g^-1),a large isosteric heat of adsorption(26.5 kJ mol^-1)and an excellent CO2/N2 selectivity(~24).
文摘The chemical pesticidesmanufacturing sectorachieved rapid developmentin 2006.According to dataprovided by the National Bu-reau of Statistics,China had723 chemical pesticide enter-prises of considerable scale(all state-owned enterprises,and non state-owned enter-prises with sales over RMB5.0 million in 2005).The indus-trial total production
文摘The development speed of the synthetic materials manufacturing sector in 2006was much slower than in 2005.According to data provided bv the National Bu-reau of Statistics,China had 1718 synthetic materials manufacturing enter-prises of considerable scale(all state-owned enterprises,and non state-ownedenterprises with sales over RMB5.0 million in 2005).Their total asset value wasRMB288.627 billion,an increase of 7.50% over the previous year.The salesrevenue was RMB333.853 billion,down 0.37%.The total profit was RMB9.562billion,a drop of 46.33%.Total emplovment was 310 600.a drop of 0.56%
文摘According to data provided by theNational Bureau of Statistics,Chinahad 3 031 enterprises of considerablescale (all state-owned enterprises,and non state-owned enterpriseswith sales over RMB5.0 million in2005) in the manufacturing sector ofcoatings,inks,pigments and similarproducts in 2006 and the employmentwas 316 200.The total asset valuewas RMB144.591 billion,an increaseof 18.95% over the previous year.Theindustrial total output value wasRMB 191.935 billion,an increase of 26.19%.The industrial added value
文摘The specialty chemicals manufacturing sector maintained steady development in 2006.The growth of its major economic indexes was more than 30%.According to data provided by the National Bureau of Statistics,China had 5512 specialty chemical manufacturing enterprises of considerable scale(all state-owned enterprises,and non state-owned enterprises with sales over RMB5.0 million in 2005).The total asset value was RMB306.501 billion,an increase of 21.82% over the previous year.The sales revenue was RMB426.685 billion,an increase of 34.65%.The total profit was RMB28.528 billion,an increase of 32.91%.The total employment was 823 800,an increase of 6.94%.
文摘1 Economic functioning of petroleum and chemical industry in 2007 The industrial output value(current price)accomplished by the petroleum and chemical industry of China in 2007 was RMB5.3 trillion,an increase of 22.5%
文摘In April 2007,China’s petroleum andchemical industry remained up trendin production.Among the 65 types ofpetrochemical products that havebeen tracked by CPCIA (China Petro-leum and Chemical IndustryAssociation),the output of 61 typesincreased compared with April 2006,
文摘CPCIA reported the economic recovery ofChinese petrochemical industry speeded upin September, with high growth in productionand improvement in operation rate. Demandfor some major chemicals went warmer,prices remained steady, the investment in theindustry increased continuously at a highspeed and the year-on-year drop in importsand exports was narrowed.
文摘According to the latest report of CPCIA,driven by the improved macro economy,China’s petroleum and chemical industry acceleratedits recovery steps in August, featuredwith increased output, narrowed fall ofproduction value, recovered demand for majorbulk chemicals, steady prices and the rapidlygrew investment. However, some sectorsin this industry operated well bellow theirfull capacities, the petrochemical market werestill dull, exports were blocked, and the investmentin some oversupply sectors in-
