12 results about "Polyaromatic hydrocarbon" patented technology

The invention belongs to the technical field of water electrolysis hydrogen production, and discloses a branched polyaromatic piperidine anion exchange membrane, a preparation method and application. The preparation method comprises the following steps: preparing a branched polymer precursor, preparing a quaternized branched polymer, and preparing the branched anion exchange membrane: dissolving the quaternized branched polymer in a third solvent, and drying in a vacuum drying oven to obtain the branched anion exchange membrane in the form of iodide ions, and soaking the branched anion-exchange membrane in the form of iodide ions in a NaOH solution for ion exchange, so that the branched anion-exchange membrane in the form of iodide ions is completely converted into a form of hydroxyl ions. According to the invention, ether-free skeleton polyaromatic hydrocarbon is selected as a main chain and has the characteristic of strong alkali-resistant stability, six-membered nitrogen heterocyclic ions are adopted as functional groups, and a large steric hindrance structure can hinder nucleophilic substitution and elimination reaction, so that the alkali-resistant stability of the anion exchange membrane is improved, and the service life of the anion exchange membrane is prolonged.

Disclosed is a continuous-flow process for selective mono-nitration of aromatic hydrocarbons and polyaromatic hydrocarbons without using mixed acid. The process contacts a stream of aqueous nitric acid, preferably at or near the nitric-acid / water azeotrope (about 68–69 wt.% HNO3), with a stream containing an aromatic substrate in a continuous-flow reactor under controlled temperature and back-pressure to provide a residence time sufficient to achieve high conversion while suppressing di- and poly-nitration. The reactor effluent is phase-separated to recover (i) an organic phase comprising a mono-nitro aromatic product and optionally unreacted substrate, and (ii) an aqueous phase comprising unreacted and / or diluted nitric acid. The aqueous phase is optionally reconcentrated (e.g., by distillation) to a near-azeotropic nitric acid composition for recycle to the reactor feed. The process provides high selectivity to mono-nitro products with improved safety and reduced acidic waste relative to sulfuric-acid-based mixed-acid nitration.

This invention discloses a polyaromatic hydrocarbon for preparing proton exchange membranes, its preparation method, and its application, belonging to the field of proton exchange membrane material preparation technology. This invention solves problems such as low molecular weight, uneven sulfonation, chain breakage in sulfonated polymers, poor dimensional stability, and poor mechanical properties in proton exchange membrane materials. Using aromatic monomers and 3,5-difluorotrifluoroacetophenone as raw materials, this invention employs a superacid-catalyzed Friedel-Crafts hydroxyalkylation reaction to prepare fluorinated aromatic polymers. Then, sulfonic acid groups are introduced onto the fluorinated aromatic polymers via nucleophilic substitution followed by sulfonation, preparing monosulfonated and disulfonated fluorinated sulfonic acid polymers. Proton exchange membranes are then prepared using these polymers as raw materials. The significant polarity difference between the hydrophobic fluorinated benzene ring side groups and the hydrophilic disulfonic acid groups in this invention is more conducive to forming a microphase separation structure and constructing continuous proton transport channels. Simultaneously, the hydrophobic fluorinated segments effectively suppress membrane swelling and improve its dimensional stability.

The present application relates to the field of organic electrochromic materials, and particularly relates to a conductive polymer material, a preparation method and application.The main chain of the conductive polymer material is composed of aryl groups, and the side chain is a phenothiazine structural unit; the phenothiazine serves as an anode material in a small-molecule electrochromic system and exhibits excellent device performance; however, the device is in a liquid state and has a risk of leakage.The present application introduces the phenothiazine structural unit into a polyaromatic hydrocarbon structure with conductivity, thereby guaranteeing the performance of the phenothiazine itself and good conductivity; as a polymer, the material can be obtained by adjusting the structure, and the material can be solution-processed into a thin film, so as to be applied to a sandwich-structured solid-state device, and the application scenarios of the electrochromic device are expanded.

Disclosed herein is a method of: providing a polyaromatic hydrocarbon-M adduct solution and reacting the adduct with a sulfide compound having the formula NixFe1-xS2 to form a product having the formula MyNixFe1-xS2. M is lithium or sodium. The value x is at least 0 and less than 1, and y is a positive number of at most 2. Also disclosed herein is a composition comprising MyNixFe1-xS2. The MyNixFe1-xS2 has a particle size of less than 1 μm.

The device (100) of the present disclosure presents an innovative approach to oxidizing hydrocarbon molecules, vital for environmental remediation and industrial processes. It comprises an inner solid cylinder (102) featuring a capping mechanism to encapsulate hydrocarbons, preventing their release, and a strategically positioned titanium surface catalyst (106) for oxidation. An electrical stimulation module delivers electrical charges to the catalyst, promoting rapid oxidation reactions. Additionally, control mechanisms regulate electrical impulse application, ensuring optimal oxidation conditions. The device (100) offers enhanced efficiency and versatility for treating hydrocarbon contamination in various settings. Its advanced design integrates cutting-edge catalytic and electrochemical principles, providing a sustainable solution for mitigating environmental pollution and advancing industrial processes.

The invention relates to the technical field of fuel cells and water electrolysis hydrogen production, in particular to an aromatic quinine onium side chain functionalized quinine-aromatic copolymer and a preparation method thereof. The quinine-arene copolymer with the functionalized arene quinine onium side chain provided by the invention has the following repetitive units: by introducing an arene quinine onium group structure on a main chain quinine structure of an ether-bond-free quinine arene copolymer, the ion capacity of the polymer can be increased, and the ion conductivity can be improved; physical crosslinking can be enhanced through the pi-pi action between side-chain aromatic hydrocarbons, the mechanical property and chemical stability of the copolymer are improved, the swelling degree of an ion exchange membrane is reduced, an ionic conduction channel is constructed through an aromatic quinine onium side chain of a macrocyclic structure, and the phase separation structure of the ion membrane is improved, so that the comprehensive performance of the polyaromatic quinine copolymer is improved.

A functionalized elastomer includes the reaction product of a living elastomeric polymer and a polyaromatic hydrocarbon terminator. The polyaromatic hydrocarbon terminator may be selected from 2-naphthaldehyde, 9-anthracenecarboxaldehyde, and 1-pyrenecarboxaldehyde. The functionalized elastomer may be compounded in a rubber composition which may be used to form a tire.

Epoxide functionalized polyaromatic feedstocks and processes for their preparation are described. The processes involve functionalizing polyaromatic hydrocarbon molecules and / or polyheterocyclic molecules present in petroleum or petrochemical streams with epoxide. The epoxide functionalized poly aromatic feedstock can be further treated so as to effect oligomerization or polymerization. The oligomers or polymers may be thermoplastic or thermoset materials and may find use in, for example, infrastructure applications, composites, fillers, fire retardants and 3-D printing materials.

Disclosed herein is a method of: providing a polyaromatic hydrocarbon-M adduct solution and reacting the adduct with a sulfide compound having the formula NixFe1-xS2 to form a product having the formula MyNixFe1-xS2. M is lithium or sodium. The value x is at least 0 and less than 1, and y is a positive number of at most 2. Also disclosed herein is a composition comprising MyNixFe1-xS2. The MyNixFe1-xS2 has a particle size of less than 1 μm.

The invention relates to the field of photoelectric materials, in particular to a boron-containing compound and application thereof. The boron-containing compound has a pi conjugated polyaromatic skeleton structure of B-N, B-Bi and B-P heteroatom pairs, and is combined with a substituent group with adjustable electrical property to realize accurate regulation and control on molecular energy level, electron distribution and spectral response, so that an anti-blue-light functional material with high absorptivity, narrow peak width at half maximum and high optical transparency in a wave band of 400-450 nm is obtained.