Methods for synthesizing a mesoporous nano-sized zeolite beta are described. The method may include mixing an aqueous base solution with hexadecyltrimethylammonium bromide (CTAB) to form a first solution; adding nano-sized zeolite particles having a particle size of less than or equal to 100 nm to the first solution to form a second solution. The nano-sized zeolite particles include a microporous framework with a plurality of micropores having diameters of less than or equal to 2 nm and a BEA framework type. The method may further include transferring the second solution to an autoclave operated at 25? C. to 200? C. for 3 to 24 hours to form a colloid; drying the colloid at 100? C. to 200? C. for 8 to 36 hours without washing the colloid to form a zeolite precursor; and calcining the zeolite precursor at 250? C. to 600? C. for 1 to 8 hours to form the mesoporous nano-sized zeolite beta.

A method of hydrogenating carbon dioxide, including contacting carbon dioxide and hydrogen with an iron-based catalyst to form a liquid and a gas. The liquid includes C.sub.nH.sub.2n, C.sub.nH.sub.2n+2, or a combination thereof and water, wherein n is 5 to 18. The gas includes CH.sub.4, C.sub.mH.sub.2m, C.sub.mH.sub.2m+2, or a combination thereof, hydrogen, and carbon dioxide, wherein m is 2 to 9. The iron-based catalyst includes 70 mol % to 97 mol % of porous FeO(OH).sub.x (wherein 1<x<2), and 3 mol % to 30 mol % of alkaline metal compound loaded onto the porous FeO(OH).sub.x.

The invention relates to a method for converting a gas into methane (CH.sub.4) which includes: a step of activating a catalytic material including praseodymium oxide (Pr.sub.6O.sub.11) associated with nickel oxide (NiO) and alumina (Al.sub.2O.sub.3), the respective proportions of which are, relative to the total mass of these three compounds: Pr.sub.6O.sub.11: 1 wt % to 20 wt %, NiO: 1 wt % to 20 wt %, and Al.sub.2O.sub.3: 60 to 98 wt %; and a step of passing a gas including at least one carbon monoxide (CO) over the activated catalytic material.

Methods for synthesizing a mesoporous nano-sized ultra-stable Y zeolite include adding sodium aluminate and colloidal silica to an aqueous NaOH solution and mixing to form a hydrogel having a molar ratio composition of 8 to 12 Na.sub.2O:Al.sub.2O.sub.3:14 SiO.sub.2:200 to 400 H.sub.2O. The method further includes heating the hydrogel to an autoclave to form a zeolite precursor which is filtered and washed to form a nano-sized Y zeolite. Further the method includes combining the nano-sized Y zeolite with water to form a nano-sized Y zeolite slurry mixture and then adding a 0.1 to 2.0 M aqueous solution of ammonium hexafluorosilicate to form a dealuminated solution. Finally the method includes filtering and washing the dealuminated solution with water to form an ultra-stable Y zeolite precursor, drying the ultra-stable Y zeolite precursor, and calcining the dried zeolite precursor to form the nano-sized ultra-stable Y zeolite.

Provided is a liquid hydrogen storage system including: a hydrogen storage tank coupled to a vessel hull and configured to store liquid hydrogen; a catalyst for conversion of para hydrogen in the liquid hydrogen into ortho hydrogen; and a catalyst holder disposed at an upper portion of the hydrogen storage tank and configured to hold the catalyst. A catalytic reaction to convert the para hydrogen into the ortho hydrogen occurs as the temperature of the upper portion of the hydrogen storage tank increases.

Provided is a liquid hydrogen storage system including: a hydrogen storage tank coupled to a vessel hull and configured to store liquid hydrogen; a catalyst for conversion of para hydrogen in the liquid hydrogen into ortho hydrogen; and a catalyst holder disposed at an upper portion of the hydrogen storage tank and configured to hold the catalyst. A catalytic reaction to convert the para hydrogen into the ortho hydrogen occurs as the temperature of the upper portion of the hydrogen storage tank increases.

A method of making a xylene isomerization catalyst comprises the steps of (i) contacting a ZSM-5 zeolite starting material having a silica to alumina molar ratio of 20 to 50 and having a mesopore surface area in the range of 50 m.sup.2/gram to 200 m.sup.2/gram in a reactor with a base to provide an intermediate zeolite material; (ii) recovering the intermediate ZSM-5 zeolite material of step (i); (iii) contacting the intermediate zeolite material with an acid to provide an acid treated ZSM-5 zeolite product; (iv) recovering the acid treated ZSM-5 zeolite material; and (v) calcining the acid treated ZSM-5 zeolite material to provide a desilicated ZSM-5 zeolite product having a silica to alumina molar ratio of 20 to 150 and having a mesopore surface area in the range of 100 m.sup.2/gram to 400 m.sup.2/gram.

The present disclosure provides a catalyst for SRO reactions. The catalyst includes a solid acid material and a metal. In this case, pores of the catalyst corresponding to at least 20% of the total pore volume of the catalyst have a pore size of 10 nm or more. The present disclosure also provides a method of using the catalyst.

A process for converting a feedstock including dicyclopentadiene to monoaromatic hydrocarbons, the process including providing a hydrocracking catalyst including a zeolite support having an average pore diameter of 5 to 13 nanometers, such as 9 to 12 nanometers, and greater than 3 to 15 weight percent, such as 5 to 15 weight percent of molybdenum tungsten, nickel, cobalt, platinum, palladium, or a combination comprising at least one of the foregoing impregnated on the zeolite support based on a total weight of the hydrocracking catalyst: and contacting the feedstock with the hydrocracking catalyst in the presence of hydrogen to provide a reaction product stream including the monoaromatic hydrocarbons converted from the dicyclopentadiene.

[Task] The task is to improve, in the hydrogenation of an aromatic halonitro compound, the yield of halogenated aromatic amine as a target product without the need for a dehalogenation inhibitor while suppressing the production of a nitroso compound.

[Solution] A hydrogenation catalyst for hydrogenation of an aromatic halonitro compound includes: a carrier containing at least one of silica, titania, and alumina; and at least one metal carried by the carrier and selected from group 10 elements in a periodic table.