【正文】
吸附量與以上3種吸附劑的吸附量相似。這個(gè)壓力要比NH3和H2S的飽和蒸汽壓(P0)、。C溫度下燒成粉末,再加入3mol/L的氫氧化鉀溶液,然后在85176。纖維的尺寸變化范圍廣,但是在很多情況下,長(zhǎng)度為105000nm,寬度為1030nm,高度為510nm。海泡石是一種纖維狀硅酸鹽,分子式是Si12Mg6O30(OH)4(H2O)4,由很多相互平行的纖維管狀物構(gòu)成[1]。因此,C53由炭石在500176。C、。、,從DubininRadushkevich吸附等溫線上可以得出吸附劑對(duì)于NH3和H2S的吸附效果,吸附劑對(duì)于N2的吸附容量可以從圖1中看出來,從圖上可以看到吸附曲線的斜率較小。海泡石對(duì)于氨的強(qiáng)有力吸附已經(jīng)有很多人通過實(shí)驗(yàn)驗(yàn)證過了[6],前人的研究表明只要對(duì)海泡石表面進(jìn)行酸化以后,這種作用就會(huì)變的很明顯。此外,從吸附等溫線上所獲得的吸附容量與把其中兩種組分分別在等溫線上查到的吸附容量之和是一致的。 B. Mixing。39:771–85.[5] Caturla F, MolinaSabio M, Rodr_?guezReinoso F. Adsorptiondesorption of water vapor by natural and heattreated sepiolite in ambient air. Appl Clay Sci 1999。 heat treatment of the mixture at 850 _C was followed by extensive washing with acidic water. The sepiolite is from Yunclillos, Spain and it was dried at 100 _C overnight.For the preparation of the pellets [4], the activated carbon was crushed to a particle size lower than 100 lm,mixed with an aqueous suspension of sepiolite, kneaded and conformed before drying at 110 _C. The proportion used for pellets ranges from 30% sepiolite, 70% carbon to 70–30%.Adsorption of ammonia and hydrogen sulphide (both with a purity higher than 99%) was carried out at 20 _C in a conventional gravimetric adsorption system up to a pressure of kPa. This pressure is much lower than saturation pressure (P0) for NH3, MPa and H2S, MPa.The porosity of the adsorbents has been already described [3,4]. All activated carbons are microporous but with different volume and micropore size volume of micropores determined by adsorption of nitrogen at 77 K increases in the order C53, the volume for carbon P being similar to carbon . On the other hand, the micropore size distribution was determined by immersion calorimetry in liquids with different molecular dimensions. The microporosity of carbon is accessible to dichloro methane ( nm) but not to benzene ( nm) or 2,2dimethylbutane ( nm), all microporosity in carbon is accessible to benzene but not to 2,2dimethylbutane and the microporosity of C53 is accessible to the three molecules.Sepiolite is an adsorbent differing from activated carbon in: (i) there is a large proportion of oxygen in the surface of sepiolite, (ii) the external surface area is high,191 m2/g [5], (iii) microporosity is homogeneous because of the existence of mi