Control of porosity and surface area in alumina. I: Effect of preparation conditions

摘要: Abstract As part of a study the preparation aluminas controlled porosity and surface area, initial investigations have focused on prepared in absence additives that control texture. The pore size area has been found to be affected significantly by conditions precipitation ageing, largely due interconversion amorphous hydroxide, pseudoboehmite bayerite. Washing drying were small effects texture except comparative experiments which sodium hydroxide was used as precipitant instead ammonium hydroxide. In this case, washing removed residual nitrate enlarged size. effect calcination intermediates affect alumina same manner previously reported.