32results about How to "Fast desorption rate" patented technology

Disclosed are silica bound zeolite adsorbent particles which possess high volumetric gas adsorption capacity for the adsorption and / or desorption of gases. The adsorbent are highly effective as a gas source in volumetrically constrained applications. The silica-bound zeolite adsorbents possess a relatively high zeolite content simultaneously with a relatively low intra-particle pore volume as compared to the clay bound zeolite aggregates heretofore used as a gas source in volumetrically constrained environments, e.g. instant beverage carbonation processes, devices or systems.

The invention discloses a catalytic module for eliminating formaldehyde at room temperature and a preparation method thereof. The catalytic module includes a skeleton carrier, a coating and a catalyst layer. The skeleton carrier is a ceramic foam structure with three-dimensional channels, and the ceramic foam structure has a plurality of channels , the channels interweave into a network structure and the arrangement direction can be in any direction of X, Y and Z; the coating is evenly coated on the surface of the channels and the outer surface of the ceramic foam structure, and the catalyst layer is highly dispersed on the coating . The invention can oxidize low-concentration formaldehyde into H2O and CO2 at room temperature and ambient humidity, has excellent low-temperature activity and removal efficiency, and the removal efficiency of formaldehyde at a space velocity of SV=50000h-1 remains above 98%. The preparation process is simple, the load of noble metal is low, and no auxiliary equipment such as light source and heating are needed. It is suitable for air purification in closed and semi-closed spaces such as living rooms, office buildings, schools, dormitories, shopping malls, furniture markets, and automobiles.

The invention relates to a preparation method of a catalyst for preparing ethylene through acetylene selective hydrogenation. The preparation method comprises the following steps: soaking carbon fiber pretreated in sol, and performing drying, roasting and oxidation corrosion after taking out the carbon fiber to obtain modified carbon fiber; loading an active component and assistant catalysis components on the modified carbon fiber through an impregnation method, and drying and roasting to obtain the catalyst for preparing ethylene through acetylene selective hydrogenation. A discontinuous coating is formed on the surface of the carbon fiber by using a sol-oxidation corrosion-impregnation technology to form a space obstacle to stop active metal agglomeration; the coating adjusts the surface property and the acidity of the carbon fiber, and facilitates improvement on the catalytic activity and the ethylene yield.

The invention discloses an organic waste gas adsorbing recovery device and a process. The device comprises at least two macromolecule resin adsorbing towers, a heat pump, a vacuum pump, a condenser, a liquid storing tank and the like, wherein the macromolecule resin adsorbing towers are internally provided with waste gas inlet regions, purifying regions for adsorbing and purifying gas and a purifying gas discharging region; the purifying regions are provided with adsorbing layers which are horizontally paved, the adsorbing layers are composed of multi-hole supporting plates fixed on the adsorbing towers, heat exchanging coils paved above the multi-hole supporting plates and macromolecule resin layers which are fully paved on the cross sections of the adsorbing towers above the heat exchanging coils successively in a overlaying manner, and the heat exchanging coils are provided with inlets and outlets communicated with the heat pump arranged outside the adsorbing towers. The organic waste gas adsorbing recovery device and the process provided by the invention have the advantages that a non-flammable macromolecule resin is adopted as an adsorbing material, the removing rate of middle-high concentration organic waste gas is more than 98%, the organic waste gas recovery rate is more than 95%, the resin is fully regenerated, and the organic waste gas can reach the discharge standard.

The invention discloses a preparation method of a chromium-iron-based nitric oxide high-efficiency treatment catalyst at normal temperature and normal pressure, its product and application, which are prepared by a co-precipitation method. A small amount of potassium sulfate was introduced in situ during the precipitation process, and after subsequent calcination, the structure of the catalyst surface and interface was reconstructed, the physical and chemical properties of the surface and interface were adjusted, and the catalyst surface was reduced to the oxidation product NO. 2 The adsorption energy accelerates its desorption rate on the catalyst surface and improves the catalytic performance of nitric oxide at room temperature and pressure. The chromium-iron-based catalyst obtained by the invention has the characteristics of good NO oxidation activity at room temperature and high stability. The preparation method is simple, easy for large-scale production, and has a good application prospect.

The invention discloses a temperature-sensitive solid amine fiber material, a preparation method and application thereof. The temperature-sensitive solid amine fiber material is synthesized by introducing amino groups and temperature-sensitive functional groups on the surface of the matrix fiber; the fiber material can change the water absorption rate of the control material by adjusting the temperature of the environment, and can also control the temperature-sensitive group. The different molar ratios of amino and amino groups are used to control the fiber materials to have different water absorption rates. The fiber material can be used in the field of intelligent special fiber products or the field of CO2 adsorption. The maximum adsorption capacity of the material for CO2 can reach 3.8mmol / g under the conditions of 35°C and 40°C; Complete desorption in 30 minutes at 70°C, which has the advantages of low desorption energy consumption and fast desorption rate.