Macroporous Intends Preparation Of Boehmite And Hydrodeoxygenation

With a great increase of economy, the antinomy between the lack of petroleum resource and sharply increasing requirement for petroleum become more and more severity, which is crucially important for the persistent development of economy and energy safety in our country. As the bio-energy with abundant reserves, environment-friendly and regenerated, not only it can satisfy the energy requirement of society, but also it meets sustainable development. So, the development and utilization of bio-energy is an important part of Energy Strategy in all countries. As the performance biodiesel got from oil is similar with diesel fuel such as better combustion performance, nonpoisonous, cleanliness and no pollution, so it can be used by mixing with diesel fuel.The biodiesel oil prepared by using hydrodeoxygenation(HDO) method has been at stage of laboratory research domestic. But it has developed quickly abroad. Triglycerides are the main composition of the vegetable oil, and the molecular of triglyceride is big which requires a high property of catalyst. Traditional catalyst carrier has a small diameter sluice, and because this small diameter sluice has large diffusion resistance, the molecular of triglyceride incoming and outgoing is not easy. So how to prepare PB andγ-Al2O3 with large pore size is becoming more and more important.This thesis based on research of the carbonization reaction to prepared PB andγ-Al2O3 in our country, analysis of factors affecting the pore properties of PB andγ-Al2O3, gave a theory that the morphology of PB andγ-Al2O3 is controlled mostly by the solvent environment. And this research designs to use a new experiment device to control the saturation of the solution and the gas to liquid mass transfer. The results showed that when the final pH of aqueous solution was between 10.5 and 9.4, the pure PB could be obtained, and the crystal size of PB was about 2.3 nm; in addition, the specific surface area, the pore volume, and the average pore diameter of PB reached 548.5 m2/g,2.22 ml/g and 16.2 nm, respectively, under an optimal condition; these values were much higher than those prepared in the stirred tank. After calcinations of PB at 550℃, theγ-Al2O3 powder obtained also yielded large pore volume and large average pore diameter. This research has been using several methods to control the pore size distribution, and the PB with narrow pore size diameter distribution has been made.The biodiesel produced from HDO method is using the linseed oil as raw materials. And this research concerns mostly the stability and activity of the catalyst and gives out the changes of the catalyst before or after hydrothermal treatment and based on these, this research gives one catalyst for HDO process. And in using of this catalyst, the yield of C15 to C18 hydrocarbon has been up to about 80%wt, and it achieves all our objectives.