42results about How to "The preparation process is non-toxic" patented technology

The invention relates to a silicon-aluminum dual binding agent vanadium-resisting additive used in a heavy oil catalytic cracking process and a preparation method thereof. The additive is characterized by comprising the following components in percent by weight: 5-45 percent of lanthana, 15-50 percent of aluminum oxide, 5-15 percent of silicon oxide, 5-20 percent of chlorine and 0.01-0.5 percent of sodium oxide. The preparation method comprises the steps of: adding the lanthana, chemical water, aluminium hydroxide and hydrochloric acid according to the requirement of the composition of the additive, wherein the aluminium hydroxide / hydrochloric acid accounts for 5-20 percent by weight; and finally, adding an acidic silica sol binding agent, mixing and pulping, homogenizing and grinding, spraying and drying to form fluidized solid microspheres with an average particle diameter of 35-85micrometers, wherein the fluidized solid microspheres have surface appearance stacking density of 0.7-1.3g / ml and specific surface area of 20-120m<2> / g. When the fluidized solid microspheres are added in an additive form and applied to the heavy oil catalytic cracking process, the intoxication of vanadium in lube oil feedstock to a system catalyst can be reduced; and according to a silicon-aluminum dual binding agent with high activity, the conversion of the heavy oil can be promoted and the yield of light oil is increased.

The invention discloses a fluorine-containing polymer functionalized carbon nanotube and a preparation method thereof. The fluorine-containing polymer functionalized carbon nanotube comprises a carbon nanotube and a fluorine-containing monomer in a mass ratio of 1: (2-10) and is obtained by graft polymerization on the surface of the carbon nanotube under the induction effect of fluorine-containing monomer. The preparation method comprises the following steps of: firstly placing the carbon nanotube and the fluorine-containing monomer in a plasma furnace; vacuumizing and introducing high-purity argon for carrying out first plasma treatment; activating with oxygen, raising temperature, and carrying out secondary plasma treatment; washing a product with acetone, carrying out vacuum filtration and drying, thus obtaining the non-toxic fluorine-containing polymer functionalized carbon nanotube with a undamaged body structure and high lubrication. The preparation method has the advantages of simple and safe operation, environmental protection and short production period. The fluorine-containing polymer functionalized carbon nanotube obtained in the end has high functionalization degree and high reaction activity and effectively overcomes the problems that the surface of the carbon nanotube is inert, and the carbon nanotube self winds and aggregates.