There is provided a hyper-branched polymer represented by the following formula (1) and having a weight-average molecular weight in a range of 1,000 to 1,000,000. In the formula (1), A.sup.1 is a group containing an aromatic ring, A.sup.2 is a group containing an amide group, A.sup.3 is a group containing sulfur, R.sup.0 is hydrogen or a substituted or unsubstituted hydrocarbon group having 1 to 10 carbon atoms, ml is in a range of 0.5 to 11, and n1 is in a range of 5 to 100.

##STR00001##

A passive NO.sub.X adsorbent includes: palladium, platinum or a mixture thereof and a mixed or composite oxide including the following elements in percentage by weight, expressed in terms of oxide: 10-90% by weight zirconium and 0.1-50% by weight of least one of the following: a transition metal or a lanthanide series element other than Ce. Although the passive NO.sub.X adsorbent can include Ce in an amount ranging from 0.1 to 20% by weight expressed in terms of oxide, advantages are obtained particularly in the case of low-Ce or a substantially Ce-free passive NOx adsorbent.

Embodiments provide a methane microporous carbon adsorbent including a thermally-treated CVD carbon having a shape in the form of a negative replica of a crystalline zeolite has a BET specific surface area, a micropore volume, a micropore to mesopore volume ratio, a stored methane value and a methane delivered value and a sequential carbon synthesis method for forming the methane microporous carbon adsorbent. Introducing an organic precursor gas for a chemical vapor deposition (CVD) period to a crystalline zeolite that is maintained at a CVD temperature forms the carbon-zeolite composite. Introducing a non-reactive gas for a thermal treatment period to the carbon-zeolite composite maintained at a thermal treatment temperature forms the thermally-treated carbon-zeolite composite. Introducing an aqueous strong mineral acid mixture to the thermally-treated carbon-zeolite composite forms the methane microporous carbon adsorbent. The crystalline zeolite includes tri-ethanolamine (TEA) and has a shape that is orthogonal with a mid-edge length in a range of 8 m to 20 m.

A method of forming a medium for gas adsorption includes providing a medium substrate with a de-functionalized hygroscopic layer, covering at least a portion of the medium substrate with a solution of an amine and a solvent, and removing excess solution from the medium substrate by evaporation to leave a coating of the amine on the substrate.

Siloxane compounds are removed from the atmospheres by silica supporting an organic sulfonic acid compound. The silica with the organic sulfonic acid compound has a specific surface area down to 500 m.sup.2/g and up to 750 m.sup.2/g and a pore volume down to 0.8 m.sup.3/g and up to 1.2 m.sup.3/g, both measured by nitrogen gas adsorption method and has a pore diameter down to 4 nm and up to 8 nm, at the peak of differential pore volume measured by nitrogen gas adsorption method. The durability of gas sensing element against siloxanes is improved.

The present invention relates to a support structure of a solid catalyst for preparing a linear alkyl aromatic compound, particularly linear alkylbenzene (LAB), and to a method of preparing an alkyl aromatic compound by alkylating an aromatic compound with an olefin using a solid alkylation catalyst, and of regenerating the deactivated solid alkylation catalyst. The present invention provides an integrated method of preparing an alkyl aromatic compound by alkylating an aromatic compound with an olefin using a filter structure as a solid catalyst carrier for alkylating an aromatic compound with an olefin, and of regenerating the deactivated solid alkylation catalyst, thereby realizing simpler and less expensive processing than conventional processes.

The present invention provides a nitric-oxide containing composite in the form of microparticles, wherein said microparticles comprise: (i) a core which comprises silica; (ii) a layer on said core which comprises a metal-organic framework; and (iii) nitric oxide;
wherein said metal-organic framework comprises organic ligands comprising at least one amine group, said metal-organic framework is uniformly distributed on the surface of said silica core and said nitric oxide is chemisorbed within said metal-organic framework.

There is provided a deodorizing material having particularly high deodorization capabilities for ammonia, acetaldehyde, and toluene. The deodorizing material of the present invention comprises fibrous activated carbon; and (A) an aromatic amine and a sulfate of the aromatic amine or (B) an aromatic amine, a sulfate of the aromatic amine, and sulfuric acid, supported on the fibrous activated carbon, wherein a total substance amount of the aromatic amine and the sulfate of the aromatic amine supported per gram of the fibrous activated carbon is 0.85 to 1.35 mmol, and a ratio of the total substance amount (mmol) of the aromatic amine and the sulfate of the aromatic amine supported per gram of the fibrous activated carbon relative to a total substance amount (mmol) of the sulfate of the aromatic amine and the sulfuric acid supported per gram of the fibrous activated carbon ([total substance amount of the aromatic amine and the sulfate of the aromatic amine]?[total substance amount of the sulfate of the aromatic amine and the sulfuric acid]) is 5.0 to 7.5.

The invention relates to a method of forming an aluminosilicate zeolite layer on an aluminium-containing metallic substrate composed of metallic aluminium or an aluminium alloy which is introduced into an alkalized aqueous reaction dispersion in which silicon and optionally aluminium are present as network-forming elements, where, irrespective of whether or not aluminium is present in the aqueous reaction dispersion, the molar ratio between the aluminium in the aqueous reaction dispersion and the sum total of the network-forming elements present in the aqueous reaction dispersion is below 0.5, where, when aluminium is not present in the aqueous reaction solution, the deficiency molar ratio is 0, and the alkalized aqueous reaction dispersion containing the aluminium-containing metallic substrate is heated and aluminium is removed from the aluminium-containing metallic substrate for the aluminosilicate zeolite formation process and the layer of an aluminosilicate zeolite is formed on the aluminium-containing metallic substrate by in situ crystallizative application. In the course of this, an aluminium complexing agent with anchoring oxygen atoms is incorporated into the alkalized aqueous reaction dispersion. The invention further relates to the advantageous use of the method product in sorption-based fields of application.

A water absorbing material which can reduce burden on the environment in disposal and can be manufactured at low cost, and a manufacturing method thereof are provided. The water absorbing material contains paper obtained by separating polyvinyl chloride from vinyl chloride wallpaper as a raw material.