The present invention relates to a pelleted acetylene black having a mass strength measured according to ASTM D 1937-10 of 200 N at most and an average pellet size measured according to ASTM D 1511-10 of at least 1.0 mm, to the use of any of said pelleted acetylene blacks to produce a compound comprising a resin or polymer or rubber matrix and the acetylene black dispersed in said matrix and to a method for producing such a compound.

The specification describes a zirconia support comprising 95 wt % ZrO.sub.2, wherein: the support has a crush strength of 20 to 140 N; the support has a total pore volume of 0.10 to 0.40 mL/g when measured by N.sub.2 physisorption; the support has an acid site density of 15 to 30 L.sub.NH3/m.sup.2; and the support has a basic site density of 0.006 to 0.015 wt %/m.sup.2 as measured by the MBOH test. Also described is a method for producing a zirconia supporting starting from zirconia or zirconium hydroxide as raw materials.

A method for using a molecular sieve shaped by rice husks as a template is provided. A method using a molecular sieve shaped by rice husks as a catalyst for a thermal cracking reaction for stearic acid is provided. A method for manufacturing a molecular sieve incorporating rice husks, the method includes the following steps. (1) mixing molecular sieve powder containing rice husks, a binder, and an extrusion aid to be homogeneous, then adding a peptizer, and mixing to be homogeneous to obtain a uniform mixture; (2) introducing water to the uniform mixture, mixing to be homogeneous, and performing a kneading process to shape a sticky conglomerate; (3) extruding the sticky conglomerate obtained in the step (2) with an extrusion device to obtain moist strips; and (4) drying, calcining, and shaping the moist strips obtained in the step (3) to obtain the molecular sieve incorporating the rice husks.

Provided are an independent porous spherical silica such that the alkali metal content is reduced, the hardness of the particles is increased, and the number of shred particles is reduced; and a method of producing such a silica. In the porous spherical silica, the diameter (D50) of volume based particle size distribution is 2 m to 200 m, the ratio (D10/D90) of the diameter (D10) to the diameter (D90) is at least 0.3, the pore volume is 0.5 to 8 mL/g, the mode pore radius is 5 to 50 nm, the specific surface area is 50 to 400 m.sup.2/g, and the arithmetic mean value of compressive test forces when specimens are found to break obtained according to JIS Z8844 is 1.010.sup.1 to 2.010.sup.1 mN, the number of particles each having a circularity of at most 0.7 is at most 20, and the alkali metal content is at most 50 ppm.

A method for using a molecular sieve shaped by rice husks as a template is provided. A method using a molecular sieve shaped by rice husks as a catalyst for a thermal cracking reaction for stearic acid is provided. A method for manufacturing a molecular sieve incorporating rice husks, the method includes the following steps. (1) mixing molecular sieve powder containing rice husks, a binder, and an extrusion aid to be homogeneous, then adding a peptizer, and mixing to be homogeneous to obtain a uniform mixture; (2) introducing water to the uniform mixture, mixing to be homogeneous, and performing a kneading process to shape a sticky conglomerate; (3) extruding the sticky conglomerate obtained in the step (2) with an extrusion device to obtain moist strips; and (4) drying, calcining, and shaping the moist strips obtained in the step (3) to obtain the molecular sieve incorporating the rice husks.

Object: To provide an adsorbent having improved durability and improved adsorbability of a substance to be adsorbed, and a method for manufacturing the adsorbent.

Resolution means: An adsorbent of the present invention is to be packed in a column, and is composed of powder containing particles whose surface is made of hydroxyapatite or fluorapatite in which at least some of hydroxyl groups of the hydroxyapatite have been replaced with fluorine atoms, the powder being composed of porous bodies with pores, the powder having an average particle size of 10 m or more and 90 m or less, the powder having an average particle compressive strength of 7.4 MPa or more and 8.9 MPa or less, and a modal pore size in a pore size distribution of the pores of the powder being 32.0 nm or more and 60.0 nm or less.

A powder containing a tubular boron nitride particle and an aggregated boron nitride particle that is an aggregate of a plurality of boron nitride primary particles, the aggregated boron nitride particle having a crushing strength of less than 7 MPa. A method for producing a heat dissipation sheet, the method including a step of applying a pressure to a composition to form into a sheet shape, the composition comprises a tubular boron nitride particle, an aggregated boron nitride particle that is an aggregate of a plurality of boron nitride primary particles and a resin, the aggregated boron nitride particle having a crushing strength of less than 7 MPa. A heat dissipation sheet containing a tubular boron nitride particle, a plurality of boron nitride primary particles and a resin, in which some of the plurality of boron nitride primary particles are located within the tubular boron nitride particle.

The present invention provides type-I and II carbon-based clathrate compounds stabilized by boron, including a boron-substituted, carbon-based framework with guest atoms encapsulated within the clathrate lattice. In one embodiment, the invention provides a carbon-based type-I clathrate compound of the formula Ca.sub.8B.sub.xC.sub.46-x.

Disclosed are a recarburizer based on a solid iron-containing carbonaceous product derived from a process of pyrolyzing methane in a methane-containing feedstock in the presence of an iron-based catalyst and a method of producing the same, where a solid, iron-containing carbonaceous material formed during methane pyrolysis using the iron-based catalyst can be produced into a molded product having a predetermined shape without a costly purification process, and can thus be employed in high value-added applications such as recarburizers.

A process can be used for the functionalization of graphene material by mixing graphene material with at least one silane. The functionalized graphene material is useful, for example, in thermoplastics.