英语翻译A recent publication by Yaghi et al.described a further step towards even higher specific surface areas.[7] They prepared a whole series of new mesoporous MOFs,including DUT-6 (renamed MOF-205).In this new series the highest Brunauer–Em

英语翻译A recent publication by Yaghi et al.described a further step towards even higher specific surface areas.[7] They prepared a whole series of new mesoporous MOFs,including DUT-6 (renamed MOF-205).In this new series the highest Brunauer–Em
英语翻译
A recent publication by Yaghi et al.described a further step towards even higher specific surface areas.[7] They prepared a whole series of new mesoporous MOFs,including DUT-6 (renamed MOF-205).In this new series the highest Brunauer–Emmett–Teller (BET) specific surface area of 6240 m2 g_1 is exhibited by MOF-210,which is composed of {Zn4O(CO2)6} units and 4,4’,4’’-(benzene-1,3,5-triyl-tris-(ethyne-2,1-diyl)) tribenzoate (BTE) ndbiphenyl ndbiphenyl-4,4’-dicarboxylate (BPDC) linkers.This extremely high surface area may be very close to the ultimate limit possible for porous structures.Therefore,MOF-210 shows the highest excess hydrogen uptake of 86 mgg-1 ever observed for physisorption at 77 K.The excess uptake still has linear correlation with the specific surface area (Figure 1).
For the characterization of porous solids usually the excess adsorption values are stated since these are easy to measure.However,for technical application the total uptake is relevant.The total uptake is the adsorbed gas layer plus the gas phase in the pores.For pores much larger than twice the kinetic diameter of the hydrogen molecule (>0.6 nm),the gas phase adds quite an appreciable amount to the hydrogen stored by adsorption.Based on its single-crystal density,MOF-210 shows an extremely high value of 176 mgg-1 for the total storage capacity at 77 K and 80 bar; this value exceeds that of all complex aluminum hydrides and most borohydrides.The volumetric storage density based on the singlecrystal density,44 gl-1 is acceptable; however,in applications the MOF is used as a powder,and the storage density thus depends on the packing density of the powder.
In conclusion,the low heat evolution during loading and the high gravimetric storage capacity of these newly synthesized MOFs with ultrahigh porosity represent a huge step forward to materials for hydrogen-storage systems based on cryoadsorption.

英语翻译A recent publication by Yaghi et al.described a further step towards even higher specific surface areas.[7] They prepared a whole series of new mesoporous MOFs,including DUT-6 (renamed MOF-205).In this new series the highest Brunauer–Em
最近Yaghi王汝成等刊物描述一个更进一步的表面积,即使对高等特殊.[7]他们准备了一整个系列的新介孔MOFs,包括DUT-6更名为MOF-(205).在这个新系列的最高Brunauer-Emmett-Teller比表面积(打赌)6240平方米的展览MOF- g_1由210年,是由{ Zn4O(CO2)6 }的单位和4、4 ',4”——(benzene-1、3、5-triyl-tris -(ethyne-2),1-diyl tribenzoate耳背式ndbiphenyl ndbiphenyl-4()、4 ' -dicarboxylate连接器(BPDC).这非常高的表面面积可能非常接近极限可能对多孔结构.因此,MOF-显示了超过210年最高氢量的86 mgg-1曾经观察到物理吸附在77 k .过量摄入还有线性相关比表面积(图1).
为表征的多孔固体吸附值通常超过规定,因为这很容易测量.然而,对于技术应用总吸收相关的.总吸水层吸附的气体加气相中毛孔.毛孔更大的两倍多的动力学直径氢分子(> 0.6海里)、气相增加相当可观的氢储存的吸附.根据其单晶密度、MOF- 210显示的是一个极高的价值为176 mgg-1总容量80酒吧在77 K,这价值超过所有的复杂和最borohydrides铝氢化物.基于容积存储密度的singlecrystal密度、44 gl-1是可以接受的,但在应用财政部作为粉,取决于储存密度这样的堆积密度粉末.
总之,低热过程中载荷和高重力容量为这些新合成MOFs超高孔隙度与代表一大步材料储氢系统为基于cryoadsorption.