A catalyst for a hydrogenation reaction including: a polymer support; and a catalytic component supported on the polymer support. The polymer support comprises a repeating unit represented by Formula 1.

Highly stable high-entropy metal-organic frameworks (HEMOFs) are derived from polynuclear metal clusters, incorporating significant levels of all rare-earth metals without segregation. As an example, HEMOFs comprising nonanuclear metal clusters of rare-earth element ions with similar size and coordination chemistry connected by 1,2,4,5-tetrakis (4-carboxyphenyl) benzene linkers was developed, providing a metal-organic framework with high internal surface area and accessible Lewis acid sites. This new class of HEMOFs enables the development of multifunctional materials with tailored properties for a wide range of applications, including in catalysis. For example, these HEMOFs are highly active for CO.sub.2 fixation under mild conditions and short reaction times, outperforming existing heterogeneous catalysts.

The present invention relates to a pre-hydrotreatment and purification method for waste lubricating oil, the method comprising the following steps: mechanical impurities are removed from waste lubricating oil, and then the oil is subjected to flash distillation to separate free water and a portion of light hydrocarbons; a bottom product of the flash distillation column is mixed with hydrogen and a self-sulfurizing oil-soluble transition metal catalyst, and then enters a slurry bed reactor for pre-hydrotreatment; a gas product obtained by performing separation on a reaction effluent is subjected to adsorption purification and then enters a hydrogen recycle compressor for cyclic use; a liquid product obtained by performing separation on a reaction effluent is subjected to hydrocyclone separation and solvent washing to remove solid residue, and finally a purified lubricating oil component is obtained. The method of the present invention has such advantages as simple processing procedures, a high non-ideal component conversion rate, a high oil liquid yield, and good quality. In addition, the oil-soluble catalyst features simple dispersion, no need for vulcanization, a small catalyst adding amount, high low-temperature hydrogenation activity, and is capable of effectively preventing the coking that could occur during a process of preheating the waste lubricating oil, markedly extending the operational lifespan of a waste lubricating oil hydrogen treatment device.

The synthesis, structure, and reactivity of a family of iridium-based molecular cluster complexes, including neutron and X-ray single-crystal diffraction measurements, are provided. It is found that one complex, which includes an Ir.sub.3H.sub.6(.sup.3H) trinuclear core, exhibits reactivity for reversible CO.sub.2 hydrogenation via hydride transfer. This reactivity is unlike previous reports of one known Ir.sub.3H.sub.6(.sup.3H) complex, which is inert.

A method of using a metal organic framework (MOF) comprising a metal ion and an at least bidendate organic ligand to catalytically detoxify chemical warfare nerve agents including exposing the metal-organic-framework (MOF) to the chemical warfare nerve agent and catalytically decomposing the nerve agent with the MOF.

A molecular building block composition can include a metal ion component; and a ligand component including a core including at least one functional group associated with the metal ion component and the core.

A method of preparing catalyst particles (the preparation method) is disclosed. The preparation method comprises combining a Ru(0) complex and a carrier fluid to form a mixture and heating the mixture at an elevated temperature to nucleate the Ru(0) complex and give the catalyst particles in the carrier fluid. The preparation method optionally comprises isolating the catalyst particles from the carrier fluid. A method of preparing an organosilicon compound via dehydrogenative silylation with the catalyst particles (the synthesis method) is also disclosed. The synthesis method comprises reacting (A) an organohydridochlorosilane compound and (B) an alkene compound in the presence of (C) a catalyst, thereby preparing the organosilicon compound. The catalyst (C) of the synthesis method comprises the catalyst particles prepared by the preparation method.

A system for building-specific multi-peril risk assessment and mitigation is disclosed. The system comprises a multi-peril hazard module, a processor, a database and a graphical network module. The multi-peril hazard module is configured to obtain hazard information and create a multi-peril event catalogue configured to generate intensity measures for multiple perils. The processor is configured to derive a peril vulnerability function and determine building-specific risk assessment results based on the hazard information and the peril vulnerability function. The database is configured to store the derived plurality of peril vulnerability functions. The graphical network module is configured to create probabilistic networks, wherein the probabilistic networks are connected to the determined building-specific risk assessment results of the peril vulnerability functions that have strong interdependencies and determine a multi-peril risk associated with the building.