202 results about "Pectolite" patented technology

A process for dewaxing waxy hydrocarbonaceous materials, such as hydrocarbon fuel and lubricating oil fractions to reduce their cloud and pour points comprises reacting the material with hydrogen in the presence of a dewaxing catalyst comprising at least one metal catalytic component and ferrierite in which at least a portion of its cation exchange positions are occupied by one or more trivalent rare earth metal cations. The rare earth ion exchanged ferrierite catalyst has good selectivity for lubricating oil production, particularly when dewaxing a Fischer-Tropsch wax hydroisomerate. Preferably at least 10% and more preferably at least 15% of the ferreirite cation exchange capacity is occupied by one or more trivalent rare earth metal cations.

A molecular sieve adsorbent for the purification of gas streams containing water vapor and carbon dioxide and a process for its preparation. The adsorbent is a sodium form of a low-silica faujasite having a silica to alumina ratio of about 1.8:1 to about 2.2:1, a residual content of potassium ions less than about 8.0 percent (equiv.), a low content of crystalline and amorphous admixtures and crystal sizes generally within the range of 1-4 mum, blended with a binder.

The present invention relates to a catalyst for hydrotreating diesel oil, it contains one carrier and molybdenum and/or tungsten and nickiel and/or cobalt loaded on said carrier. The described carrier is composed of alumina and zeolite, and the weight ratio of the alumina and zeolite is 90:10-50:50, and the described alumina is formed from microporous alumina anjd macroporous alumina according tothe weight ratio of 75:25-50:50, in which the micrporous alumina is the alumina whose proe volume whose diameter is less than 80 angstrom pore is above 95% of total pore volume, and the macroporous alumia is the alumina whose pore volume whose diameter is 60-600 angstrom pore is above 70% of total pore volume.

The present invention is one kind of catalyst with ZSM-5/SAPO-11 composite zeolite for hydrogenating and modifying catalytically cracked gasoline and its preparation process. The composite zeolite is prepared through compounding solution A with aluminum sulfate, sulfuric acid and water; compounding solution B with water glass, tetraethyl ammonium hydroxide and water; mixing solution A and solution B to form homogeneous colloid; crystallizing the colloid mixture at 150-180 deg.c for 24-72 hr; adding phosphoric acid, pseudoboehite, silica sol and SAPO-11 synthesizing template agent; and final crystallizing at 170-200 deg.c for 24-48 hr to obtain sodium type composite zeolite. The catalyst with the composite zeolite as carrier has excellent hydrogenating and desulfurizing performance, high stability, high gasoline yield, high isomerization activity and certain aromatization activity, and may be applied in producing high quality clean gasoline product.

The invention provides a process for hydrothermally synthesizing fly ash into a highly-pure zeolite and a fly ash zeolite adsorbent, which comprises the following steps: adding alkali solution into fly ash, obtaining solution containing silicon elements and aluminum elements under the hydrothermal condition, adding a certain amount of base soluble Al2O3 or SiO2 in the solution containing the silicon elements and the aluminum elements, and then preparing the highly-pure zeolite after hydrothermal reaction is carried out for a certain time; and adding the fly ash or the fly ash which is not dissolved under the hydrothermal condition into sodium hydroxide or sodium carbonate to be mixed uniformly (be calcined at a certain temperature), carrying out the hydrothermal condition, and then obtaining the fly ash zeolite adsorbent. The invention has simple process; the purity of the prepared highly-pure zeolite can achieve above 90 percent; and the prepared fly ash zeolite adsorbent has stronger adsorption capacity for heavy metal ions or organic wastewater.

The invention discloses a zeolite adsorbent and its preparation method, the zeolite adsorbent is powder particles using zeolite as main raw material; it mixes 60-95% zeolite, 30% filler, 1-30% binding agent, 0-20% hole agent and 0-20% acid to prepare colloid which solid content is 10-60%; After spray-dries it, then it roasts power particles which droplet method volume>0.5 ml/g. The exchange capacity is large, it can remove the ammonia nitrogen, calcium magnesium ion, fluorinion or heavy metallic ion in sewage water effectively and reach sewage water emission standard.

The invention belongs to the technical field of ceramics, and particularly relates to an anion easy-cleaning functional ceramic additive and a preparation method thereof, a ceramic prepared by using the additive and a preparation method thereof. The additive is prepared from the following raw materials in percentage by mass: 10-16% of Chongguang stones with a particle size of 5-20 microns, 16-25% of tourmaline with a particle size of 5-15 microns, 5-15% of copper pectolite with a particle size of 5-20 microns, 8-12% of nano titanium dioxide, 6-8% of nano zinc oxide, 5-10% of lead-free frits, 7-20% of rare earth materials, 8-10% of superfine alumina, 8-15% of superfine quartz powder and 5-10% of sodium carbonate. The preparation method of the additive comprises the following steps of carrying out mixed ball-milling on the lead-free frits, the rare earth materials, the superfine alumina, the superfine quartz powder and the sodium carbonate firstly; and then, adding the Chongguang stones, the tourmaline, the copper pectolite, the nano titanium dioxide and the nano zinc oxide into the obtained product, and ball-milling the obtained mixture, so that the additive with a particle size of 1-10 microns is obtained. The additive disclosed by the invention has a self-polarizing performance, and has strong adsorption and decomposition functions, so that negative ions are produced; and after the additive is added into a ceramic, the ceramic is extremely easy to clean and not stained, and has no hidden dirt, therefore, the ceramic has a strong affinity to water.

The invention extends the connotation range required to be protected on the basis of a previously issued patent ZL200710025045.4, i.e., a nanometer microcrystalline composite filter material and a preparation method thereof, belonging to the field of a water disposal technique material. According to weight percentage, the nanometer microcrystalline composite filter material comprises 3-95 percent of attapulgite clay, 5-80 percent of sepiolite clay, 2-25 percent of kaolinite clay, 2-97 percent of tubular halloysite, 5-75 percent of diatomite, 5-75 percent of natural zeolite (clinoptilolite, mordenite and the like), 0-25 percent of pillared montmorillonite, 0-50 percent of expanded vermiculite, 0-5 percent of expanded perlite and 0-50 percent of active carbon or bamboo carbon powders. All raw materials which are powder shapes are mixed according to proportion and stirred to granulate by adding an inorganic adhesive, then sintered and activated at the temperature of 900-500 DEG C (inert gas is required for sintering and activating the filter material added with active carbon). The nanometer microcrystalline composite filter material has smooth shape, rough surface and uniform particle size, with the diameter of 1-10mm, and is used for biological filter tanks and high-class adsorption filter materials in deep purification systems of drinking water and reclaimed water sewage disposal systems.

Hydrocracking catalyst composition comprising an optional metal hydrogenation component supported on a carrier comprising a zeolite of the faujasite structure having a unit cell size in the range of from 24.10 to 24.40 Å, a bulk silica to alumina ratio (SAR) above about 12, and a surface area of at least about 850 m²/g as measured by the BET method and ATSM D4365-95 with nitrogen adsorption at a p/po value of 0.03.

The invention discloses an amination catalyst and a preparation method thereof, which aims to solve the problem that the amination catalyst is not high in activity and selectivity. The compositions in weight percentage of the amination catalyst are: 15 to 25 percent of A, 5 to 10 percent of B, 1 to 3 percent of C, 0.1 to 1.5 percent of D, and the balance being h-type mordenite, wherein the A is alumina; the B is titanium oxide; the C is metallic ion W<6+>, Re<7+> or Bi<3+>; the D is metallic ion Cs<+>; and the metals exist in the form of elements or oxides. The preparation method comprises the following steps of loading the components C and D on the h-type mordenite, well mixing the components C and D with the alumina and ethanolamine titanate dodecane alcohol ester, molding, roasting and activating the mixture. The catalyst is used for synthesizing ethylene dimine under the conditions of ethanolamine and ammonia phase.

The invention relates to a heavy aromatic hydrocarbon light catalyst, a preparation method and application thereof. In a composite carrier, H type MCM-56 zeolite is between 50 and 80 wt percent, Al2O3 is between 20 and 50 wt percent, metals or oxides thereof of tin, bismuth, lanthanum, molybdenum, nickel, chrome and cobalt are 3 to 20 wt percent, or platinum, palladium, rhenium or oxide thereof are 0.1 to 2wt percent. The catalyst is applicable to the light preparation of benzene, methylbenzene and dimethylbenzene by heavy aromatic hydrocarbon; and the catalyst has good catalytic effect on a hydrodealkylation light reaction of C9 heavy aromatic hydrocarbon, the transformation ratio of C9 aromatic hydrocarbon is 76.89 wt percent, the yield of BTX is 48.37 wt percent, the selectivity of the BTX is 80.50 mol percent, no phenylethane is generated in a product, and the dimethylbenzene has high content.

The invention relates to a catalytic cracking propylene additive. The additive measured in the total weight of 100 percent is characterized by being prepared from the following components in percentage by weight: 30-80 percent of molecular sieve including 28-78 percent of ZSM-5 zeolite, 10-65 percent of clay and 5.0-20.0 percent of P2O5, preferable 7.0-15.0 percent as well as 0-1.0 percent of La2O3. Aluminum phosphate sol is adopted as an adhesive to improve the abrasive strength of the additive, improve the solid content of spraying slurry and avoid the chlorine contents of the spraying slurry and the additive. The prepared catalytic cracking propylene additive remarkably improves the activity, slightly lessens the activity of a main catalyst when mixing with the main catalyst for use, can improve the product distribution, have favorable dry gas and coke selectivity and simultaneously improve the propylene yield and the gasoline octane number.

A low silica and a high purity gmelinite zeolite that have a SiO2/Al2O3 ratio of about 10 or less are provided.

The invention discloses a method of preparing macroporous/mesoporous zeolite molecular sieve through seed crystal induction. The method includes: using an organic template plate to prepare zeolite molecular sieve seed crystal; adding a small amount of the seed crystal into synthesis liquid of a zeolite molecular sieve, and performing simple high-temperature hydrothermal crystallization to obtain the mesoporous/macroporous zeolite molecular sieve uniform in size. The macroporous/mesoporous zeolite molecular sieve prepared by the method is formed by self-assembling zeolite molecular sieve nanorods or nanoparticles of 5-500nm, and rich mesoporous/macroporous pores exist among the zeolite molecular sieve nanorods or nanoparticles. The method is simple, safe and suitable for ZSM-5, ZSM-11, beta-type or TS-1 molecular sieves. The method is simple and safe, and the macroporous/mesoporous zeolite molecular sieve is high in purity and crystallinity, controllable in mesoporous/macroporous structure and suitable for serving as a membrane separation material or a catalyst for catalytic reaction.

The invention discloses a multistage meso-porous ZSM-5 catalyst as well as a preparation method and an application method thereof. The preparation method comprises the following steps: with trimethoxysilane quaternary ammonium salt and alkyl lumiflavin oxygen silicon propyl dimethyl ammonium chloride (Cx(MeO)3SiMe2NH4Cl) as a cationic meso-porous template agent and tripropyl ammonium hydroxide (TPAOH) as a microporous template agent, synthesizing multistage porous aluminosilicate ZSM-5 zeolites. The multistage meso-porous ZSM-5 catalyst has the characteristics of high acidity, multistage meso-porous property, bimodal distribution (3.2nm+12.7.5nm) of meso-pores within a distribution range of 2-50nm, good crystallinity, good anti-coking activity, good catalytic cracking activity, simpleness in preparation method and capability of being expanded to synthesis of other silica-alumina zeolites and all-silicon zeolites.