6results about How to "Improve greenness" patented technology

The application relates to the hydrogen energy preparation technical field, in particular to a methanol cracking hydrogen production carbon process and system, the methanol cracking hydrogen production carbon process comprises the following steps: a, preparing methanol gas; b, methanol cracking is carried out through a catalyst system: under an argon atmosphere, the catalyst system is heated to a predetermined temperature, the methanol gas is introduced, and methanol cracking hydrogen production carbon is carried out; the catalyst system comprises an alloy catalyst and a modified metal oxide catalyst; c, product collection: collecting hydrogen and carbon material obtained by cracking. The application provides a methanol cracking hydrogen production carbon process and system, so as to solve the problems of insufficient catalyst activity and selectivity, large reactor energy consumption and high investment.

The invention belongs to the technical field of disaster prevention and reduction of civil engineering and space structures, and particularly relates to a combined type opening and closing space structure with a liftable vertical tuning vibration reduction substructure. The device mainly comprises petal mass plates (1), petal connecting short rods (2), rotary connecting rods (3), hinge joints (4), a bottom driving circular ring (5), vertical connecting rods (6), small fan-shaped driving plates (7), small fan-shaped supporting circular rings (8), a bottom large circular ring (9), an upper small circular ring (10), double inclined supporting rods (11), a reticulated shell structure (22), radial main rods (12), annular auxiliary rods (13), conical web members (14), steel cables (15), nitrogen springs (16), viscous dampers (17) and middle small circles (18). A vertical connecting rod pin shaft (19), a stainless steel pin shaft (20) and a wear-resistant polyurethane lining (21) are arranged on the base (1). The outer portion of the device is of a rigid petal-like structure, a plurality of petal mass plates are connected with a connecting short rod through hinge joints, the connecting short rod is connected with a rotary connecting rod, and the rotary connecting rod is fixed to a double-slant supporting rod and can rotate. Through the driving device, the petals can move outwards and rotate around the shaft to realize opening and closing; the middle small circle also has an opening and closing function, and through driving of the bottom circular ring, the multiple small sectors rotate by a certain angle in situ around the radial direction, and opening and closing are achieved; meanwhile, a steel cable is hung around to lift the small circle, the steel cable is connected with a nitrogen spring and a viscous damper in series to form a simple pendulum structure with the small circle, and the TMD function is achieved.

The invention provides an innovative method for constructing rich nanopores in wood cell walls within millisecond-level time by combining a flash evaporation Joule heating technology and a two-dimensional MXene controlled release mechanism without any chemical activating agent. The two-dimensional MXene nanosheet is used as a gas release regulation component and is uniformly loaded on the surface of a wood cell wall to form a controlled release layer with high bulk density (10-30mg cm <-2 >). Connecting the wood sample with a flash evaporation Joule heating device, and applying an instantaneous voltage of 100-300V to rapidly rise the temperature to about 700-1100 DEG C; under the action of high temperature, wood cell walls are rapidly pyrolyzed along with instantaneous generation of a large amount of gas, and the preformed MXene controlled release layer effectively limits dissipation of the gas, so that pyrolysis gas is rapidly accumulated in the wood and is efficiently activated, and a rich nano-pore structure is constructed in situ in the cell walls. The prepared activated wood has a developed pore structure and can be widely applied to the fields of supercapacitors, electrochemical adsorbents, catalyst carriers and the like.

The invention relates to the technical field of ester purification, in particular to a nitrogen circulation-purification coupling device and method for low-carbon unsaturated acid-high-carbon alcohol ester continuous deacidification. The device not only realizes continuous operation of removing excessive reaction acid from low-carbon unsaturated acid-high-carbon alcohol ester, but also effectively reduces nitrogen consumption, realizes coupling operation of ester deacidification and recycle gas purification in a single tower, is beneficial to obtaining a deacidified ester product with low acid content and high ester recovery rate, greatly reduces emission of waste liquid and waste gas, and is green and environment-friendly.

The invention discloses a low-carbon high-toughness cementing material based on kaolin tailings and a preparation method of the low-carbon high-toughness cementing material, and the low-carbon high-toughness cementing material is prepared from the following components in parts by weight: 4.0 to 5.5 parts of Portland cement, 3.0 to 4.0 parts of kaolin tailings, 1.5 to 2.0 parts of calcium carbonate, 0.005 to 0.05 part of microfiber, 0.5 to 1 part of gypsum and 0 to 3.3 parts of fine aggregate. The preparation method comprises the following steps: carrying out light burning treatment on the kaolin tailings, and then cooling to room temperature; grinding the obtained product to form powder with the specific surface area of 400-700m < 2 > / kg; and uniformly stirring and mixing Portland cement, calcium carbonate, gypsum, fine aggregate, microfibers and the obtained powder to obtain the low-carbon high-toughness cementing material based on the kaolin tailings. The low-temperature calcined kaolin tailings are adopted to replace high-quality kaolin to serve as an aluminosilicate mineral source, and the utilization rate of tailings resources is remarkably increased.

This invention relates to a method for the electrocatalytic oxidation of anisole to anisole sulfoxide using iron-based complexes, belonging to the fields of homogeneous catalysts and electrocatalytic oxidation technology. The invention utilizes an iron-based complex formed by coordination between a tetraamide macrocyclic ligand (TAML-H4) and metallic iron as a homogeneous molecular catalyst, with water as the sole oxygen source, to construct an electrocatalytic anisole oxidation system. Through the synergistic effect of the catalyst and water, a proton-coupled electron transfer and single-electron oxidation process occurs at the anolyte, resulting in the loss of two electrons and two protons to generate a high-valence iron-oxygen active intermediate [Fe]. Ⅴ (O)(TAML)] – This invention achieves highly efficient and selective oxidation of anisole, generating the high-value-added product benzyl sulfoxide at the anode. It eliminates the need for additional strong oxidants, employs mild reaction conditions, boasts high atom economy, and is environmentally friendly, making it suitable for the green conversion of sulfides in the synthesis of fine chemicals. This provides a feasible pathway for the industrial production of sulfoxide compounds.