Metal organic framework compositions and methods for acid gas capture from elevated temperature (70 to 370 C.) gas streams like those found in steel and cement manufacturing processes that require energy-intensive cooling prior to feasible CO.sub.2 capture are disclosed. The metal-hydride frameworks ZnH-MFU-4l (Zn.sub.5H.sub.4(btdd).sub.3; H.sub.2btdd=bis(1H-1,2,3-triazolo[4,5-b],[4,5-i])dibenzo[1,4]dioxin)) and ZnH-CFA-1 (Zn.sub.5H.sub.4(bibta).sub.3, where ZnH-CFA-1=Zn.sub.5H.sub.4(bibta).sub.3; H.sub.2(bibta)=1H,1H-5,5-bibenzo[d][1,2,3]triazole demonstrate steep CO.sub.2 uptake between 150 C. and 300 C. at low partial pressures, indicating strong sorbent-interactions with the framework through a metal-ligand insertion process.

A device for regenerating materials using a plasma field. The device includes a flow unit configured to flow a gas or a liquid and a plasma unit coupled to the flow unit and including a plurality of electrodes and a sorbent bed having a sorbent material. The plasma unit is configured to receive the flow of the gas or liquid from the flow unit so that the gas or liquid flows through the sorbent material and a predetermined chemical species in the gas or liquid is adsorbed or absorbed by the sorbent material. The device also includes a power source providing a power signal to one or more of the electrodes. The electrodes are configured so that the power signal generates a plasma field in the sorbent material that causes the adsorbed or absorbed chemical species to desorb from the sorbent material.

Described are gas storage medium and methods of storing source gases in the gas storage medium, particularly relating to using hydroxylated metal oxides or hydroxylated metalloid oxides as a storage medium for storing diborane.

The present disclosure relates to the recovery of an alkoxide catalyst used in a process depolymerizing a polyester to form a diacid or diester and a diol. The present disclosure also relates to the recovery of an alkoxide catalyst used in a process depolymerizing polyethylene terephthalate to form dimethyl terephthalate and mono ethylene glycol.

Method for treating water to reduce the dissolved silica content thereof, the method being characterised in that it comprises at least one step of adsorbing the dissolved silica, the step consisting in passing the water through a reactor housing an adsorbent granular material consisting of grains of iron hydroxide (III) and/or iron oxyhydroxide (III) and at least one step of regenerating the adsorbing power of the granular material, the step consisting in bringing the granular material into contact with a base and at least one chloride.

The invention is directed to ion capture devices and methods for ion capture.

Disclosed herein are compositions for extracting lithium from a brine, methods for utilizing compositions for extracting lithium from a brine, and/or methods for preparing a composition for extracting lithium from a brine. For example, a composition may include lithium aluminum hydroxide crystals having a crystal structure of a plurality of hexagonal sheets. In some instances, each of the plurality of hexagonal sheets includes one or more vacant sites. Moreover, the composition may include a plurality of reinforcing ions bonded to an outside edge of one or more of the plurality of hexagonal sheets. In some instances, the plurality of reinforcing ions supports the crystal structure of the plurality of hexagonal sheets when the composition is washed with a stripping fluid and maintains a separation distance between one or more of the plurality of hexagonal sheets.

A pressure swing adsorption (PSA) device includes an adsorption tower configured to introduce hydrogen gas and adsorb impurity components in the hydrogen gas by using a pressure swing adsorption (PSA) method, an adsorbent of one layer made of activated carbon or an adsorbent of two layers in which activated carbon and zeolite are stacked being disposed in the adsorption tower, the hydrogen gas containing carbon monoxide (CO) of 0.5 vol % or more and 6.0 vol % or less and methane (CH.sub.4) of 0.4 vol % or more and 10 vol % or less as the impurity components; and a densitometer configured to detect a concentration of CO in the hydrogen gas discharged from the adsorption tower, wherein the impurity components are adsorbed and removed to cause the CO concentration measured by the densitometer to fall below a threshold.

The invention relates to a noxious gas purificant and its preparation and purification method for removing nitrogen oxides from gas streams thereof. The preparing method is characterized in that: mixing, according to a predetermined ratio and a process, a salt of iron, manganese, cobalt, or copper, and a related derivative thereof, an alkali or alkaline substance and a related derivative thereof, water and a forming agent, so as to obtain a solid compound or mixture; drying and activating the solid compound or mixture to produce a solid product as the purificant; and introducing the purificant into a gas-solid reactor, and removing noxious gases in a gas stream by performing, in a preconfigured temperature and using the purificant, a gas-solid reaction on the harmful gases in the gas stream. The purificant can be recycled and reused.

The invention concerns a system for producing hydrogen gas H2. The system comprises a reformer reactor, a regenerator reactor, a regenerator transport line and a recycling line. The regenerator power source system providing heat to the regenerator may comprise a gas burner and a return line for transporting at least a portion of cooled exhaust off-gas G from the an internal volume of the regenerator into the gas burner and/or the burner transport line.