Method for the control of pressure in a loop for the preparation of ammonia or methanol by means of an anti-surge control valve of a compressor and/or a compressor flow regulation valve for the recirculation of loop recirculation gas at variating flow supply of fresh synthesis gas.

Method for the control of pressure in a loop for the preparation of ammonia or methanol by means of an anti-surge control valve of a compressor and/or a compressor flow regulation valve for the recirculation of loop recirculation gas at variating flow supply of fresh synthesis gas.

An apparatus for electrolysing seawater to produce hydrogen is disclosed. The apparatus includes a unipolar electrolytic cell configured to operate in cathode-cathode mode and configured to reduce the production of chlorine and/or oxygen.

An apparatus for electrolysing seawater to produce hydrogen is disclosed. The apparatus includes a unipolar electrolytic cell configured to operate in cathode-cathode mode and configured to reduce the production of chlorine and/or oxygen.

A plant growth promoting system according to the present invention makes foliar application of nitric oxide containing a mineral material, an enzymatic material, and a soil microorganism to a root part and leaves of a plant by pressure spraying, makes foliar application of carbonated water containing a plant growth promoter and a moisture fluctuation inhibitor to leaves of the plant by pressure spraying, and applies quantum energy to a round surface and an aerial part of the plant, thus providing the effect of promoting the growth of the plant.

A plant growth promoting system according to the present invention makes foliar application of nitric oxide containing a mineral material, an enzymatic material, and a soil microorganism to a root part and leaves of a plant by pressure spraying, makes foliar application of carbonated water containing a plant growth promoter and a moisture fluctuation inhibitor to leaves of the plant by pressure spraying, and applies quantum energy to a round surface and an aerial part of the plant, thus providing the effect of promoting the growth of the plant.

Provides a method for producing aluminum oxide powder by electrochemical dissolving aluminum salt, comprise: (A) providing an electrochemical device with an aluminum material as an anode and an acidic solution as an electrolyte; (B) accelerating the dissolution of the aluminum material by current pulse method to form an acidic aluminum salt solution; (C) neutralizing the acidic aluminum salt solution with a basic solution to form an aluminum hydroxide sol; (D) adding an additive in the aluminum hydroxide sol, filtering the aluminum hydroxide sol and drying to obtain aluminum hydroxide powder; (E) roasting the aluminum hydroxide powder to form micron scale γ-aluminum oxide powder. Combines the acidic aluminum salt method and the electrochemical dissolution method to improve the dissolving rate of the aluminum material and increase the output efficiency of the acidic aluminum salt, and obtaining micron scale γ-aluminum oxide powder.

Provides a method for producing aluminum oxide powder by electrochemical dissolving aluminum salt, comprise: (A) providing an electrochemical device with an aluminum material as an anode and an acidic solution as an electrolyte; (B) accelerating the dissolution of the aluminum material by current pulse method to form an acidic aluminum salt solution; (C) neutralizing the acidic aluminum salt solution with a basic solution to form an aluminum hydroxide sol; (D) adding an additive in the aluminum hydroxide sol, filtering the aluminum hydroxide sol and drying to obtain aluminum hydroxide powder; (E) roasting the aluminum hydroxide powder to form micron scale γ-aluminum oxide powder. Combines the acidic aluminum salt method and the electrochemical dissolution method to improve the dissolving rate of the aluminum material and increase the output efficiency of the acidic aluminum salt, and obtaining micron scale γ-aluminum oxide powder.

A tandem electrode for electrochemically reducing carbon dioxide is described. The electrode includes a first distinct catalyst layer and a second distinct catalyst layer. The first distinct catalyst layer is made of a C.sub.1 hydrocarbon or C.sub.2+ product selective catalyst and the second distinct catalyst layer is comprised of a CO selective catalyst. In one embodiment, the second distinct catalyst layer is concentrated at one end of the tandem electrode. In another embodiment, the tandem electrode also includes a microporous layer and a substrate layer.

A tandem electrode for electrochemically reducing carbon dioxide is described. The electrode includes a first distinct catalyst layer and a second distinct catalyst layer. The first distinct catalyst layer is made of a C.sub.1 hydrocarbon or C.sub.2+ product selective catalyst and the second distinct catalyst layer is comprised of a CO selective catalyst. In one embodiment, the second distinct catalyst layer is concentrated at one end of the tandem electrode. In another embodiment, the tandem electrode also includes a microporous layer and a substrate layer.