2results about How to "Suitable for acidity" patented technology

The invention discloses a silicon-aluminum material and a preparation method thereof. After being roasted at 500-700 DEG C, the silicon-aluminum material has the following properties: the content of silicon dioxide is 20-75wt%, and the pore volume is 0.70-1.5 mL / g; and the specific surface area is 280-400 m < 2 > / g. The preparation method of the silicon-aluminum material comprises the following steps: (1) uniformly mixing a silicon-containing compound A, an auxiliary agent A, an aluminum-containing compound and water to obtain a material flow A; (2) carrying out heat treatment on the material flow A in the presence of organic amine to obtain a material flow B; (3) uniformly mixing a silicon-containing compound B, an acidic aluminum-containing compound, an alkaline aluminum-containing compound and water, and treating to obtain a material flow C; (4) mixing the material flow C with an auxiliary agent B to obtain a material flow D; and (5) mixing the material flow B and the material flow D, carrying out hydrothermal treatment, and then washing, drying and roasting to obtain the silicon-aluminum material. The provided silicon-aluminum material shows certain molecular sieve characteristics, has the characteristics of high B acid content and stepped pore channel distribution, and is especially suitable for being used as a carrier of a hydrogenation catalyst.

This invention provides a method for producing lubricating oil base oil from heavy feedstock and the resulting lubricating oil base oil. The method includes: cutting the heavy feedstock to obtain a light component, a middle fraction, and a bottom wax; wherein the boiling point ranges of the light component, the middle fraction, and the bottom wax are 170-300℃, 300-500℃, and >500℃, respectively; subjecting the bottom wax to a first isomerization reaction under the catalysis of a first isomerization catalyst to obtain a first isomerization product; subjecting the first isomerization product and the middle fraction to a second isomerization reaction under the catalysis of a second isomerization catalyst to obtain a second isomerization product; subjecting the second isomerization product to hydrorefining; and then fractionating the obtained refined product to obtain the lubricating oil base oil. The lubricating oil base oil produced by this method has high yield, low pour point, low cloud point, and high viscosity index, making it a high-quality lubricating oil base oil.