52results about How to "High rare earth content" patented technology

This invention discloses a method for raising rare earth content in super-stable Y-type zeolite. The method comprises: mixing super-stable Y-type zeolite and 0.01-2 N acid solution at a liquid / solid ratio of 4-20 at 20-100 deg.C, treating for 10-300 min, washing, filtering, adding rare earth salt solution for rare earth ion exchange, washing, filtering, and drying to obtain rare earth reinforced super-stable Y-type zeolite. The obtained rare earth reinforced super-stable Y-type zeolite has through pores without any blockage, and has obviously raised rare earth content. Cracking catalyst containing the rare earth reinforced super-stable Y-type zeolite as the active component has high heavy oil conversion ability.

The invention relates to a heavy oil catalytic cracking catalyst and its preparation method and a heavy oil catalytic cracking method. The heavy oil catalytic cracking catalyst comprises 10-40% by dry base weight of small crystal grain gas phase ultrastable high-silica rare earth Y-type zeolite, 10-60% by dry base weight of clay and 13-60% of by oxide weight of an inorganic oxide, the inorganic oxide contains at least one active alumina, the average diameter of the alumina crystal grains is in a range of 0.1-0.8 micrometers, a lattice constant is in a range of 24.5-24.6 angstroms and a silica-alumina ratio is in a range of 7-10. The small crystal grain gas phase ultrastable high-silica rare earth Y-type zeolite comprises, by weight, 6-16% of a rare earth oxide and less than 2% of sodium oxide. The Y-type zeolite is prepared from small crystal grain Y-type zeolite through gas phase ultrastable treatment, washing and rare earth ion exchange. The average aperture of the active alumina is in a range of 5-25nm. The catalytic cracking catalyst has good stability and good catalytic cracking coke selectivity and can produce a gasoline product with a high gasoline octane number and good quality.

The invention discloses a making method of intermediate alloy of high rare earth magnesium, which is characterized by the following: adding RE-O and MgO in the REF3-LiF or REF3-MgF2-LiF fusing salt system; electrolyzing; proceeding eutectoid; making the product with high receiving rate.

The RE-containing high-silicon Y-type zeolite has Si / Al ratio of 5-30, initial unit cell constant of 2.430-2.460 nm, RE content of 10-20 wt%, ratio between the balanced unit cell constant and initialunit cell constant not smaller than 0.985, and diffraction peak strength ratio I1 / I2 separately at (12.43+ / -0.06) deg and (11.87+ / -0.06) deg obtained through X ray diffraction analysis greater than 1.The zeolite is prepared through the first high stability gaseous process and the subsequent RE ion exchange process. It has optimized structure, high heat stability, high water stability, high cracking activity and good olefin reducing performance.