A synthetic technology for the production of methyl-ethyl-ketone (MEK) is introduced, which makes use of butylene catalytic hydration to produce secondary butanol (SBA) and this is followed by dehydrogenation of SBA. ...A synthetic technology for the production of methyl-ethyl-ketone (MEK) is introduced, which makes use of butylene catalytic hydration to produce secondary butanol (SBA) and this is followed by dehydrogenation of SBA. By optimizing the operating conditions of a commercial unit, the running results showed that the recom-mended process was successful and that the catalysts had high activity, good selectivity, and long lifespan, which ensured long-term running in commercial units.展开更多
The intermetallic compound Zr1-xHfxCo and Zr1-xScxCo(x=0,0.1,0.2,0.3) were prepared and their suitability for hydrogen storage was investigated. The alloys show single cubic phase identical with ZrCo by X-ray diffract...The intermetallic compound Zr1-xHfxCo and Zr1-xScxCo(x=0,0.1,0.2,0.3) were prepared and their suitability for hydrogen storage was investigated. The alloys show single cubic phase identical with ZrCo by X-ray diffraction. Pressure-composition-temperature(PCT) measurement results show that the equilibrium dehydrogenation pressure of Zr1-xHfxCo alloy increases obviously with increasing Hf content while it changes little with increasing Sc content for Zr1-xScxCo alloy. The dehydrogenation temperatures for supplying 100 kPa hydrogen are about 673,627,and 650 K for ZrCo,Zr0.7Hf0.3Co and Zr0.7Sc0.3Co alloy,respectively. Thermodynamics calculation results indicate that dehydrogenation -H for Zr1-xHfxCo alloy decreases with increasing Hf content but increases with increasing Sc content for Zr1-xScxCo alloy,which are coincident with their dehydrogenation property. The maximal hydrogen storage capacity of both Zr1-xHfxCo and Zr1-xScxCo alloy at room temperature are high enough.展开更多
In October 2007 the 50 kt/a ethyl acetate unit at the Jilin Fuel Ethanol Company,Ltd.delivered the qualified product.The construction of this project was kicked off in April 2006 and this project was said to be the fi...In October 2007 the 50 kt/a ethyl acetate unit at the Jilin Fuel Ethanol Company,Ltd.delivered the qualified product.The construction of this project was kicked off in April 2006 and this project was said to be the first in China enterprise apply-展开更多
基金supported by the National Natural Science Foundation of China(21776236,21676225)Natural Science Foundation of Hunan Province(2018JJ2384)+1 种基金the Scientific Research Foundation of Huaihua University(HHUY2017-08)Collaborative Innovation Centre of New Chemical Technologies for Environmental Benignity and Efficient Resource Utilization
基金supported by the National Basic Research Program of China(973 Program,2011CB201400)the National Natural Science Foundation of China(21273263,21273264,21227002)the Natural Science Foundation of Shanxi Province of China(2012011005-2,2013021007-3)~~
基金the State Key Fundamental Research Project(No.2006CB202504)the National Natural Science Foundation of China(No.20676140)Natural Science Foundation of Shanxi Province.
文摘A synthetic technology for the production of methyl-ethyl-ketone (MEK) is introduced, which makes use of butylene catalytic hydration to produce secondary butanol (SBA) and this is followed by dehydrogenation of SBA. By optimizing the operating conditions of a commercial unit, the running results showed that the recom-mended process was successful and that the catalysts had high activity, good selectivity, and long lifespan, which ensured long-term running in commercial units.
文摘The intermetallic compound Zr1-xHfxCo and Zr1-xScxCo(x=0,0.1,0.2,0.3) were prepared and their suitability for hydrogen storage was investigated. The alloys show single cubic phase identical with ZrCo by X-ray diffraction. Pressure-composition-temperature(PCT) measurement results show that the equilibrium dehydrogenation pressure of Zr1-xHfxCo alloy increases obviously with increasing Hf content while it changes little with increasing Sc content for Zr1-xScxCo alloy. The dehydrogenation temperatures for supplying 100 kPa hydrogen are about 673,627,and 650 K for ZrCo,Zr0.7Hf0.3Co and Zr0.7Sc0.3Co alloy,respectively. Thermodynamics calculation results indicate that dehydrogenation -H for Zr1-xHfxCo alloy decreases with increasing Hf content but increases with increasing Sc content for Zr1-xScxCo alloy,which are coincident with their dehydrogenation property. The maximal hydrogen storage capacity of both Zr1-xHfxCo and Zr1-xScxCo alloy at room temperature are high enough.
文摘In October 2007 the 50 kt/a ethyl acetate unit at the Jilin Fuel Ethanol Company,Ltd.delivered the qualified product.The construction of this project was kicked off in April 2006 and this project was said to be the first in China enterprise apply-
