C01B35/10

Recycling of Nuclear Liquid Waste with Boron Control

The invention relates to the complex processing of a nuclear power plant's NPP's liquid, boron-containing waste with a complex composition, being generated during the operation of NPPs, including of ones VVER-type, and can be used to isolate boric and nitric acids and hydroxides of sodium and potassium for their reuse in the NPP process cycle. The invention allows to obtain crystalline boric acid and highly concentrated solutions of nitric acid and hydroxides of sodium and potassium, suitable for reuse in the NPP process cycle and for general industrial use. Conducting electrodialysis at low values of current and voltage provides a reduction of the method's energy intensity. The involvement of all major components of waste mother liquors into the processing reduces the amount of stored and disposed hazardous waste.

Mechanochemical process for the production of BP, B12P2 and mixtures thereof, in particular as nanopowders

The present invention relates to a process for the preparation of a boron phosphide, more specifically BP and/or B.sub.12P.sub.2, comprising the mechanochemical reaction of boron phosphate (BPO.sub.4) with at least one alkaline earth metal (EA). In particular, the process of the invention allows for the selective preparation of either BP or B.sub.12P.sub.2 with more than 95% purity, through the reduction of boron phosphate (BPO.sub.4) with at least one alkaline earth metal (EA) according to reaction (1) for BP and according to reaction (2) for B.sub.12P.sub.2: BPO.sub.4+4 EA.fwdarw.BP+4 EA(O) (1) 2BPO.sub.4+5 (EA)B.sub.2+3 EA.fwdarw.B.sub.12P.sub.2+8 EA(O) (2). The present invention further relates to boron phosphide powders, in particular BP or B.sub.12P.sub.2 powders, of nanometric or micrometric size.

Mechanochemical process for the production of BP, B12P2 and mixtures thereof, in particular as nanopowders

The present invention relates to a process for the preparation of a boron phosphide, more specifically BP and/or B.sub.12P.sub.2, comprising the mechanochemical reaction of boron phosphate (BPO.sub.4) with at least one alkaline earth metal (EA). In particular, the process of the invention allows for the selective preparation of either BP or B.sub.12P.sub.2 with more than 95% purity, through the reduction of boron phosphate (BPO.sub.4) with at least one alkaline earth metal (EA) according to reaction (1) for BP and according to reaction (2) for B.sub.12P.sub.2: BPO.sub.4+4 EA.fwdarw.BP+4 EA(O) (1) 2BPO.sub.4+5 (EA)B.sub.2+3 EA.fwdarw.B.sub.12P.sub.2+8 EA(O) (2). The present invention further relates to boron phosphide powders, in particular BP or B.sub.12P.sub.2 powders, of nanometric or micrometric size.

THERMOCHEMICAL ENERGY STORAGE DEVICE

Process for the reversible thermochemical storage of energy and release of energy, wherein, for the storage of energy, orthoboric acid is converted into boric oxide, metaboric acid or boric oxide and metaboric acid by loss of water, wherein, for the release of energy, boric oxide or metaboric acid or boric oxide and metaboric acid are converted into orthoboric acid by reaction with water, wherein the reactions take place in a suspension medium, wherein for the reversible storage of energy, orthoboric acid is present suspended in the suspension medium, and wherein the suspension medium containing orthoboric acid is brought to a temperature at which water loss occurs via an energy source, wherein for the reversible thermochemical release of energy boric oxide and/or metaboric acid are present suspended in a suspension medium, wherein water is added to the suspension medium containing boric oxide or metaboric acid or boric oxide and metaboric acid so that the reaction proceeds to orthoboric acid, wherein the heat generated in this process is dissipated to a heat consumer.

ELECTROLYTE FOR POWER STORAGE DEVICES AND NONAQUEOUS ELECTROLYTE SOLUTION

To provide an electrolyte for a storage device capable of lowering the electric resistance and maintaining a high capacity even after charging and discharging are repeatedly carried out, and a storage device.

An electrolyte for a storage device, which comprises a lithium-containing complex compound represented by the following formula (1), (2), (3), (4) or (5):


(Li).sub.m(A).sub.n(UF.sub.x).sub.y(1)


(Li).sub.m(Si).sub.n(O).sub.q(UF.sub.x).sub.y(2)

wherein A is O, S, P or N; U is a boron atom or a phosphorus atom; m and n are each independently from 1 to 6; q is from 1 to 12; x is 3 or 5; and y is from 1 to 6;


(Li).sub.m(O).sub.n(B).sub.p(OWF.sub.q).sub.x(3)

wherein W is a boron atom or a phosphorus atom; m, p and x are each independently from 1 to 15; n is from 0 to 15; and q is 3 or 5;


(Li).sub.m(B).sub.p(O)n(OR).sub.y(OWF.sub.q).sub.x(4)

wherein W is a boron atom or a phosphorus atom; n is from 0 to 15; p, m, x and y are each independently from 1 to 12; q is 3 or 5; and R is hydrogen, an alkyl group, an alkenyl group, an aryl group, a carbonyl group, a sulfonyl group or a silyl group, and such a group may have a fluorine atom, an oxygen atom or other substituent;


(Li).sub.m(O).sub.n(B).sub.p(OOC-(A).sub.z-COO).sub.y(OWF.sub.q).sub.x(5)

wherein W is a boron atom or a phosphorus atom, A is a C.sub.1-6 allylene group, alkenylene group or alkynylene group, a phenylene group, or an alkylene group having an oxygen atom or a sulfur atom in its main chain; m, p, x and y are each independently from 1 to 20; n is from 0 to 15; z is 0 or 1; and q is 3 or 5.

Additive Raw Material Composition and Additive for Superhard Material Product, Preparation Method of the Additive, Composite Binding Agent and Superhard Material Product, Self-Sharpening Diamond Grinding Wheel and Preparation Method of the Same
20190344401 · 2019-11-14 ·

Disclosed are an additive raw material composition and an additive for superhard material product, a composite binding agent, a superhard material product, a self-sharpening diamond grinding wheel and a method for manufacturing the same. The raw material composition consisting of components in following mass percentage: Bi.sub.2O.sub.3 25%40%, B.sub.2O.sub.3 25%40%, ZnO 5%25%, SiO.sub.2 2%10%, Al.sub.2O.sub.3 2%10%, Na.sub.2CO.sub.3 1%5%, Li.sub.2CO.sub.3 1%-5%, MgCO.sub.3 0%5%, and CaF.sub.2 1%5%. The composite binding agent is prepared from the additive and a metal composite binding agent. The self-sharpening diamond grinding wheel prepared from the composite binding agent has high self-sharpness, high strength, and fine texture, is uniformly consumed during the grinding process, does not need to be trimmed during the process of being used, and maintains good grinding force all the time, fundamentally solving the problems of long trimming time and high trimming cost of the diamond grinding wheel (FIG. 1).

Rapid and efficient bioorthogonal ligation reaction and boron-containing heterocycles useful in conjunction therewith

A reaction method comprising combining a carbonyl-substituted arylboronic acid or ester and an -effect amine in aqueous solution at a temperature between about 5 C to 55 C, and a pH between 2 and 8 to produce an adduct. A process is also provided comprising: contacting a boron compound having a boron atom bonded to a sp.sup.2 hybridized carbon conjugated with a cis-carbonyl, the boron having at least one labile substituent, with an -effect amine, in a solvent for a time sufficient to form an adduct, which may proceed to further products.

Rapid and efficient bioorthogonal ligation reaction and boron-containing heterocycles useful in conjunction therewith

A reaction method comprising combining a carbonyl-substituted arylboronic acid or ester and an -effect amine in aqueous solution at a temperature between about 5 C to 55 C, and a pH between 2 and 8 to produce an adduct. A process is also provided comprising: contacting a boron compound having a boron atom bonded to a sp.sup.2 hybridized carbon conjugated with a cis-carbonyl, the boron having at least one labile substituent, with an -effect amine, in a solvent for a time sufficient to form an adduct, which may proceed to further products.

Additive composition and composition binding agent for superhard material and preparation thereof, and self-sharpening diamond grinding wheel and preparation thereof

Disclosed are an additive raw material composition and an additive for superhard material product, a method for preparing the additive, a composite binding agent, a superhard material product, a self-sharpening diamond grinding wheel and a method for manufacturing the same. The raw material composition consisting of components in following mass percentage: Bi2O3 25%40%, B2O3 25%40%, ZnO 5%25%, SiO2 2%10%, Al2O3 2%10%, Na2CO3 1%5%, Li2CO3 1%5%, MgCO3 0%5%, and CaF2 1%5%. The composite binding agent is prepared from the additive and a metal composite binding agent. The self-sharpening diamond grinding wheel prepared from the composite binding agent has high self-sharpness, high strength, and fine texture, is uniformly consumed during the grinding process, does not need to be trimmed during the process of being used, and maintains good grinding force all the time, fundamentally solving the problems of long trimming time and high trimming cost of the diamond grinding wheel.

BORYL ETHERS, CARBONATES, AND CYCLIC ACETALS AS OXIDATIVELY-TRIGGERED DRUG DELIVERY VEHICLES

A compound, or a pharmaceutically acceptable salt thereof, having a structure of:

##STR00001##

wherein L is a cleavable linker group;
X is a cargo moiety-containing group; and
R.sup.1 and R.sup.2 are each independently hydrogen, alkyl, or substituted alkyl; or R.sup.1 and R.sup.2 together form a boronic ester ring or a substituted boronic ester group.