The present invention and embodiments thereof provide a process to separate ethylene products from impurities such as nitrogen, hydrogen, ethane, propane and isobutane without the need for distillation processes.

The present invention, and embodiments thereof, provide a process to separate ethylene products from impurities such as nitrogen, hydrogen, ethane, propane and isobutane without the need for distillation processes.

Provided are a catalyst structure for ozone decomposition including a support containing a porous inorganic material, and an α-MnO.sub.2 catalyst located on at least a portion of inner pores and a surface of the support, an air-cleaning method using the same, and an air-cleaning device and an air-cleaning system each including the catalyst structure for ozone decomposition.

The present invention relates to a hybrid membrane mixed with nanoparticles including a zeolitic imidazolate framework (ZIF), and a gas separation method using the same. A hybrid membrane according to the present invention comprises a polymer matrix, and nanoparticles which are dispersed in the polymer matrix and include the ZIF.

An indicator is provided in a vehicle for indicating necessity of change of a fuel vapor absorber in a venting line of a vehicle tank, especially a methanol tank for fuel cell vehicles.

A coated substrate (2a, 2b) adapted for hydrocarbon adsorption having at least one surface, and a coating on the at least one surface, the coating comprising particulate carbon and a binder, wherein the particulate carbon has a BET surface area of at least about 1300 m.sup.2/g; and at least one of: (i) a butane affinity of greater than 60% at 5% butane; (ii) a butane affinity of greater than 35% at 0.5% butane; (iii) a micropore volume greater than about 0.2 ml/g and a mesopore volume greater than about 0.5 ml/g. A bleed emission scrubber (1) and an evaporative emission control canister system (30) comprising the coated substrate (2a, 2b) are provided. They can control evaporative hydrocarbon emissions and may provide low diurnal breathing loss (DBL) emissions even under a low purge condition.

A membrane including a polymer substrate having pore channels and a metal-organic framework disposed on the polymer substrate. Methods of producing the membrane are described. Methods of separating gases using the membrane are also provided.

A method for removing ethylene from the atmosphere surrounding an agricultural product that is sensitive to ethylene, which promotes climacteric ripening and senescence, is disclosed. The method uses a membrane for selective ethylene permeation and removal from a container that is used to store, transport, and preserve the agricultural product.

An object of the present invention is to provide a gas refining apparatus which can produce a product gas with high purity and high yield at low cost and can produce a plurality of types of gas as a product gas without changing an adsorbent, and the present invention provides a gas refining apparatus (10) including a first derivation line (L3) connected to the second adsorption towers (2a, 2b) and through which the first gas flows, a second derivation line (L4) connected to the second adsorption towers (2a and 2b) and through which the second gas flows, a regeneration line (L5) connected to the first adsorption towers (1a, 1b), through which a regeneration gas for regenerating a first adsorbent in the first adsorption towers (1a, 1b) flows, and a pump (P) provided in the second derivation line (L4) and configured to desorb the second gas from a second adsorbent in the second adsorption towers (2a and 2b), and the regeneration line (L5) is connected to each of the first derivation line (L3) and the second derivation line (L4).

In some embodiments, the present disclosure pertains to a method for capturing alkenes that includes: associating the alkenes with metal-organic frameworks, where the metal-organic frameworks includes one or more metals and one or more ligands coordinated with the one or more metals, and where the metal-organic frameworks are conductive; and oxidizing the metal-organic frameworks, where the oxidizing results in a capturing of the alkenes by the metal-organic frameworks. Additional embodiments of the present disclosure pertain to a system for capturing alkenes that includes: metal-organic frameworks, where the metal-organic frameworks include one or more metals and one or more ligands coordinated with the one or more metals, and where the metal-organic frameworks are conductive; and an alkene feed source associated with the metal-organic frameworks, where the alkene feed source is configured to deliver an alkene feed to the system.