According to embodiments, methods for the production of boron-silicalite-1 are disclosed. In embodiments, the method may include combining a mineralizer agent, a templating agent, water, and boric acid in a first microwave unit; heating the first microwave unit to form a boron-zeolite; calcining the boron-zeolite to form an alkali-zeolite; combining the alkali-zeolite with ammonium nitrate to produce an ion-exchanged zeolite; heating the ion-exchanged zeolite to form a protonated zeolite; and calcining the protonated zeolite to form the boron-silicalite-1. In embodiments, the method may include combining a templating agent, water, and boric acid in a first hydrothermal unit; heating the first microwave unit to form a boron-zeolite; calcining the boron-zeolite to form an alkali-zeolite; combining the alkali-zeolite with ammonium nitrate to produce an ion-exchanged zeolite; heating the ion-exchanged zeolite to form a protonated zeolite; and calcining the protonated zeolite to form the boron-silicalite-1. The boron-silicalite-1 may be microscale or nanoscale.

A pot furnace for calcining petroleum coke at low temperature may include a pot, and a cooling water jacket and a flame path below the pot. The flame path may include eight layers. An inlet of a first flame path layer may be in communication with a volatile channel in the front wall, and is provided with a first flame path layer flashboard. An eighth flame path layer may be in communication with a communication flue. Flue gas may be discharged out of the furnace body through a main flue. A furnace bottom cooling channel may be provided below the eighth flame path layer.

The present disclosure relates to a catalyst composition comprising copper and iron on a support for use in a process for the synthesis of higher alcohols from a syngas feed stream comprising hydrogen and carbon monoxide, the catalyst composition being remarkable in that the support is one or more zeolite, in that the total content of iron and copper is ranging from 1 to 10 wt. % based on the total weight of the catalyst composition and as determined by inductively coupled plasma optical emission spectroscopy, in that the Cu/Fe bulk molar ratio is ranging from 1.1:1.0 to 5.0:1.0 as determined by XRF spectroscopy.

The present application is related to a three-dimensionally ordered macroporous oxygen-deficient cerium dioxide catalyst, and a preparation method and an application thereof. The catalyst is prepared by using a polymethyl methacrylate (PMMA) colloidal crystal template method, calcining in a reducing/oxidizing atmosphere, and treating with water vapor, and the prepared catalyst shows an excellent activity and stability in photothermocatalytic purification of typical amospheric pollutants such as styrene, n-hexane, and cyclohexane. The method has the characteristics of cheap and easily available raw materials, simple preparation process, controllable oxygen vacancy, surface acid amount, and acid strength of the obtained material, and excellent photothermocatalytic performance.

A metal oxide catalyst synthesized using supercritical carbon dioxide extraction is provided, wherein the metal oxide catalyst includes an active site containing at least one type of metal oxide and a support for loading the active site and the metal oxide is an oxide of a metal selected from the group consisting of transition metals (atomic number 21 to 29, 39 to 47, 72 to 79, or 104 to 108), lanthanide (atomic number 57 to 71), post-transition metals (atomic number 13, 30 to 31, 48 to 50, 80 to 84, and 112), and metalloids (atomic number 14, 32 to 33, 51 to 52, and 85) in the periodic table, and a combination thereof.

A process for the production of a catalyst comprising the steps of: dissolving the requisite quantities of copper nitrate and nickel nitrate in de-ionised water to provide a sub-0.30 molar aqueous solution of copper nitrate and nickel nitrate together in the ratio required; providing an ammoniacal solution by adding concentrated aqueous solution of ammonia in a quantity equal to between six and ten times the quantity required to realise both a 1:6 molar ratio for Cu.sup.2+ to ammonia and a 1:6 molar ratio for Ni.sup.2+ to ammonia; loading gamma alumina with 1 to 30% w/w of copper and nickel in a weight ratio of nickel to copper of 1:5 to 2:1 by suspending the requisite quantity of gamma alumina in said ammoniacal solution to achieve the required loading of copper and nickel; stirring the resulting gamma alumina suspension for at least 4 h at room temperature; then the volatile components evaporate under ambient conditions leaving dry loaded gamma alumina, which is calcined at a temperature of at least 260° C. for at least 30 min with a constant heating up rate; a catalyst or catalyst mixture, the catalyst or each catalyst in the catalyst mixture being obtainable by the above-mentioned process; and the use of the catalyst or catalyst mixture for the conversion of exhaust gases from an internal combustion engine into carbon dioxide, water and nitrogen.

Disclosed are a phosphorus-containing high-silica molecular sieve, its preparation and application thereof, wherein the molecular sieve comprises about 86.5-99.8 wt % of silicon, about 0.1-13.5 wt % of aluminum and about 0.01-6 wt % of phosphorus, calculated as oxides and based on the dry weight of the molecular sieve, the molecular sieve has an XRD pattern with at least three diffraction peaks, the first strong peak is present at a diffraction angle of about 5.9-6.9°, the second strong peak is present at a diffraction angle of about 10.0-11.0°, and the third strong peak is present at a diffraction angle of about 15.6-16.7°. The phosphorus-containing high-silica molecular sieve shows an improved hydrocracking activity in the presence of nitrogen-containing species when used in the preparation of hydrocracking catalysts.

Process for fixed-bed reforming of a hydrocarbon-based feedstock comprising n-paraffinic, naphthenic and aromatic hydrocarbons, at a temperature of between 400 and 700° C., a pressure of between 0.1 and 4 MPa, and a mass flow of feedstock treated per unit mass of catalyst and per hour of between 0.1 and 10 h.sup.−1, by bringing said feedstock into contact with a catalyst comprising platinum, a promoter metal selected from the group consisting of rhenium and iridium, a halogen selected from the group consisting of fluorine, chlorine, bromine and iodine, and a porous alumina support in the form of an extrudate characterized by a length “l” of between 1 and 10 mm, a section comprising four lobes, the largest diameter “D” of the cross section of said extrudate being between 1 and 3 mm.

A system and related methods for the production of lime sorbent compositions from a calcium carbonate feedstock formed using flash calcination to produce the intermediate calcium oxide material.

The present invention provides a method for producing a compound represented by formula (2), comprising at least a step of preparing a compound represented by formula (1) and a step of reacting the compound represented by formula (1) with a hydrogen source using a catalyst,

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wherein R.sup.1 and R.sup.2 are each independently an alkyl group.