A process is disclosed for limiting the emissions of gases from a porous material in the form of particles comprising a porous inorganic support and at least 0.1% by weight of one or more compounds chosen from organic compounds, halogen compounds, boron compounds and phosphorus compounds. The particles are placed in motion within a hot gas stream traversing them, and a liquid composition containing one or more film-forming polymer(s) is sprayed over the moving particles by means of a twin-fluid atomization nozzle, in which the liquid composition is mixed with a pressurized gas, with a relative atomization pressure of greater than or equal to 0.710.sup.5 Pa, until a protective layer containing the film-forming polymer(s) and exhibiting a mean thickness of less than or equal to 20 m is obtained on the surface of the said particles. A material resulting from this process is also disclosed.

Iron compound particles comprise a -FeOOH crystal phase and a metal element other than Fe with which the -FeOOH crystal phase is doped, wherein the metal element other than Fe is at least one metal element selected from the group consisting of elements of Al as well as 3d and 4d transition metals belonging to periodic table Groups 4 to 12 other than Fe, an atomic ratio of the metal element other than Fe to the Fe element (metal element other than Fe/Fe element) is 0.001 to 0.5, and the iron compound particles satisfy at least one of the following requirements (A) and (B): (A) having a crystallite diameter of 1 to 60 nm when measured by X-ray diffraction; and (B) having an average particle diameter of 1 to 600 nm when measured by dynamic light scattering in a solvent.

The present invention relates to a process for preparing a catalyst, at least comprising the steps of adding a protecting agent to an aqueous solution of a metal precursor to give a mixture (M1), adding a reducing agent to mixture (M1) to give a mixture (M2), adding a support material to mixture (M2) to give a mixture (M3), adjusting the pH of mixture (M3), and separating the solid and liquid phase of mixture (M3). Furthermore, the present invention relates to the catalyst as such and its use as diesel oxidation catalyst.

A novel nickel particulate form is provided that efficiently forms a zero-valent nickel complex with a phosphorus-containing ligands in an organic liquid to form a hydrocyanation catalyst. Particles in the nickel particulate form comprise nickel crystallites. For example, the nickel particulate form can have a BET Specific Surface Area of at least about 1 m.sup.2/gm; an average crystallite size less than about 20-25 nm, the nickel particulate form can have at least 10% of the crystallites in the nickel form can have can have a diameter (C10) of less than about 10 nm, and/or there are on average at least about 10.sup.15 surface crystallites per gram nickel. A ratio of BET SSA to C50 for the nickel particulate form can be at least about 0.110.sup.9 m/gm and preferably at least about 0.410.sup.9 m/gm. Methods of preparation and use are also provided.

The present invention provides a beta zeolite that is useful as a catalyst, adsorbent agent, or the like, and that is both microporous and mesoporous. The beta zeolite is characterized by (i) the SiO.sub.2/Al.sub.2O.sub.3 ratio being 8-30, and the SiO.sub.2/ZnO ratio being 8-1000, (ii) the micropore surface area being 300-800 m.sup.2/g, (iii) the micropore volume being 0.1-0.3 cm.sup.3/g, and (iv) having mesopores having, in the state as synthesized, a diameter of 2-6 nm and a volume of 0.001-0.3 cm.sup.3/g. The beta zeolite is favorably produced by means of adding and reacting a zinc silicate beta zeolite as a seed crystal with a reaction mixture containing a silica source, an alumina source, an alkali source, and water.

A process for the conversion of oxygenates to olefins is presented. The process utilizes a catalyst having a 2-dimensional morphology, and the catalyst is a pentasil zeolite. The process is an oxygenate to olefins conversion under typical temperatures and pressures, but provides for an increased propylene yield and a reduced ethylene yield.

The present invention is directed to a degradation composition, methods and kits for degrading organic pollutants comprising reduced copper based nanoparticles-polymer complex (Cu-NPs) and an oxidant.

Preparation of a catalyst suitable for use in Fischer-Tropsch Synthesis reactions using a two step process in which the steps may be performed in either order. In step a), impregnate an iron carboxylate metal organic framework selected from a group consisting of iron-1,3,5-benzenetricarboxylate (Fe-(BTC), Basolite F-300 and/or MIL-100 (Fe)), iron-1,4 benzenedicarboxylate (MIL-101(Fe)), iron fumarate (MIL-88 A (Fe)), iron-1,4 benzenedicarboxylate (MIL-53 (Fe)), iron-1,4 benzenedicarboxylate (MIL-68 (Fe)) or iron azobenzenetetracarboxylate (MIL-127 (Fe)) with a solution of a promoter element selected from alkali metals and alkaline earth metals. In step b) thermally decompose the iron carboxylate metal organic framework under an inert gaseous atmosphere to yield a catalyst that is a porous carbon matrix having embedded therein a plurality of discrete aliquots of iron carbide. If desired, add a step intermediate between steps a) and b) or preceding step b) wherein the metal organic framework is impregnated with an oxygenated solvent solution of a polymerizable additional carbon source and the polymerizable additional carbon source is thereafter polymerized.

A new molecular sieve material is designated as EMM-23 and has, in its as-calcined form, an X-ray diffraction pattern including the following peaks in Table 1: TABLE-US-00001 TABLE 1 d-spacing () Relative Intensity [100 I/I(o)] 17.5-16.3 60-100 10.6-10.1 5-50 9.99-9.56 20-70 6.23-6.06 1-10 5.84-5.69 1-10 5.54-5.40 1-10 4.29-4.21 1-10 3.932-3.864 1-10 3.766-3.704 5-40 3.735-3.674 1-10 3.657-3.598 1-10 3.595-3.539 1-20

Shaped porous carbon products and processes for preparing these products are provided. The shaped porous carbon products can be used, for example, as catalyst supports and adsorbents. Catalyst compositions including these shaped porous carbon products, processes of preparing the catalyst compositions, and various processes of using the shaped porous carbon products and catalyst compositions are also provided.