A metal organic framework glass membrane and a preparation method thereof are provided. The preparation method includes a step of heating a crystalline metal organic framework material to the melting temperature at a rate of 1-15° C./min and then naturally cooling the crystalline metal organic framework material. The crystalline metal organic framework material contains a metal node and a ligand A. The metal node is a zinc ion and/or a cobalt ion and the ligand A is imidazole or phosphoric acid. The metal organic framework glass membrane has a wide range of membrane-forming conditions, and the material thereof can be melted without being decomposed within a control range to form a continuous glass layer with good repeatability.

There is provided a membrane comprising: a porous support layer having a first surface and a second surface; a palladium (Pd)-based selective layer on a first surface of the support layer; and a zeolite protective layer on a second surface of the support layer, wherein the support layer is between the Pd-based selective layer and the zeolite protective layer. There is also provided a method of forming the same.

A separation membrane complex includes a porous support and a separation membrane formed on the support and used to separate fluid. A supply/permeation area ratio obtained by dividing a supply-side surface area by a permeation-side surface area is higher than or equal to 1.1 and lower than or equal to 5.0, the supply-side surface area being the area of a region of the surface of the separation membrane to which fluid is supplied, the permeation-side surface area being the area of a region of the surface of the support from which fluid that has permeated through the separation membrane and the support flows off.

The present invention discloses a Fe—Al-based metal membrane and preparation method thereof, which relate to the technical field concerning gas-solid separation under high-temperature, low-pressure working conditions, and mainly address the defects of conventional metal filter elements in the prior art such as high filtration resistance and low flux under low-pressure working environments. The preparation method of the present invention comprises the steps of: stirring and defoaming a mixture composed of a Fe—Al-based metal powder and an organic-additive-added water-based solvent, thus obtaining a cast slurry; casting a uniform membrane layer on a metal substrate layer having a required thickness on a casting machine, and performing drying treatment on it, thus obtaining a membrane green body; and, placing the dried membrane green body in a sintering furnace for degreasing, sintering, and alloy phase ordering treatments, respectively, thus obtain a prepared Fe—Al-based metal membrane.

A graphene oxide-based membrane There is provided a graphene oxide-based membrane comprising a substrate and a plurality of layers of single-layered graphene oxide formed on the substrate, each of the plurality of layers of single-layered graphene oxide is functionalised by at least one diamine functional group, wherein interlayer spacing between two adjacent layers of single-layered graphene oxide is ≤ 10 Å. The membrane may be comprised in an electrocapacitive unit. There is also provided a method of forming the membrane.

A porous membrane laminate of the present disclosure includes a porous support layer and a porous membrane laminated on one surface of the support layer and containing polytetrafluoroethylene as a main component. The porous membrane is formed of a uniaxially stretched material, the porous membrane has a mean pore size of 25 nm to 35 nm and a maximum pore size of 49 nm or less, and the porous membrane has an average thickness of 0.6 μm to 3.5 μm.

A zeolite membrane complex includes a porous support and a zeolite membrane formed on the support. Water molecules are adsorbed in the zeolite membrane. A decreasing rate of water content in the zeolite membrane from 250° C. to 500° C. is 0.1% or more.

In production of a zeolite membrane complex, a starting material solution containing at least a structure-directing agent and FAU-type zeolite particles having an average particle diameter of 50 to 500 nm is prepared. Then, a support is immersed in the starting material solution to form a zeolite membrane on the support by hydrothermal synthesis, the zeolite membrane being composed of AFX-type zeolite. After that, the structure-directing agent in the zeolite membrane is removed.

A method of producing a separation membrane includes a seed crystal adhesion step of adhering zeolite seed crystals to a porous support formed of stainless steel to obtain a seed crystal-bearing support and a separation layer formation step of forming a porous separation layer formed of a zeolite on the seed crystal-bearing support. The stainless steel has a contact angle with water of 90° or more. The seed crystal adhesion step includes bringing the zeolite seed crystals and a solvent having a contact angle with the stainless steel of 30° or less into contact with the porous support.

Provided are a porous substrate structure and a manufacturing method thereof. The porous substrate structure includes a substrate, an anodic aluminum oxide layer and a double metal oxide layer. The substrate has a plurality of pores. The anodic aluminum oxide layer is disposed on the substrate. The double metal oxide layer is disposed on the anodic aluminum oxide layer.