CAS: 12070-14-3; Zirconium Carbide

📜Zirconium Tetrapropoxide置于乙酰丙酮体系中,用 正丁醇 用作溶剂,化学反应生成碳化锆
参考文献:
标题:
摘要:Polymeric Precursors For Carbothermal Reactions Were Prepared From The Chelate Derivatives Of Titanium And Zirconium Alkoxides L2M(Or)(2) (L Is An Acetylacetonato Or Ethyl Acetoacetato Group) In Alcohols By Reaction With Organic Compounds Having Two Or More Reactive Oh Groups,Such As Ethylene Glycol,Saccharose,Tartaric Acid Or Dihydroxybenzenes. These Organic Groups Act As Bridging Ligands In Transesterification And Condensation Polymerization Yielding Either Spinnable Viscous Solutions Or Elastic Gels. The Rheological Properties Of The Concentrated Solutions Allowed For The Preparation Of Polymer Fibres And Films. At Temperatures Up To 1600 Degrees C,Bulk Precursors As Well As Fibres And Films Were Thermally Converted Into Carbide Powders,Films Or Coatings. The Structural Transformations Of The Polymeric Materials Into The Carbides Were Investigated Using Thermogravimetric-Differentia I Thermal Ana Lyses (Tga-Dta),X-Ray Diffraction (Xrd),Scanning Electron Microscopy (Sem),Fourier Transform Infra-Red (Ftir) Analysis And Raman Spectroscopy. (C) 1998 Kluwer Academic Publishers.
Doi:10.1023/a:1004428818457

专利信息

专利号:US-6121377-A
优先权日:1998-09-10
标题 :Process for the production of thermoplastic elastomeric polyolefin alloys, including syndiotactic-atactic polypropylene alloys and isotactic-atactic polypropylene alloys, and catalysts therefore
发明人：CHIEN JAMES C W
权利人:ACADEMY OF APPLIED SCIENCES; RINES AND RINES
摘要:This invention relates to thermoplastic elastomeric polyolefin alloys (preferably polypropylene alloys) and the processes for preparing naturally compatibilized polyolefin alloys using a 'one-pot' polymerization of a single monomer (preferably propylene), whereby two homopolymers having different stereoisomeric structures are produced (preferably stereoregular and stereoirregular), as well as a third block copolymer having alternating sequences of the two structural segments of the two homopolymers; and wherein catalyst compositions are used enabling the direct synthesis of naturally compatibilized polymer blends comprising for components: two organometallic complexes of group IVB elements, a catalyst which irreversibly reacts with at least one ligand on the transition metal complexes converting it to catalytically active state, and a hydrocarbyl, substituted hydrocarbyl, or oxyhydrocarbyl compound of Group IIA, IIB, and IIIA metals, which functions as a cross-over agent.

专利号:US-9919973-B1
优先权日:2017-03-31
标题 :Synthesis of high temperature ceramic powders
发明人：CHENG ZHE; FOROUGHI PANIZ; BEHRENS ANDRES
权利人:CHENG ZHE; FOROUGHI PANIZ; BEHRENS ANDRES; THE FLORIDA INTERNATIONAL UNIV BOARD OF TRUSTEES
摘要:The present invention relates to methods and apparatuses for forming high temperature ceramic powders. A method of producing high temperature ceramic powders according to an embodiment of the present invention can include preparing a solution, atomizing the solution, providing a gas and carrying the atomized solution into a furnace via the gas, evaporating the solvent, precipitating and drying the solutes, performing a thermolysis (or pyrolysis) reaction, and performing a carbothermal reduction reaction (CTR) in situ, and collecting product particles after they exit from the furnace.

专利号:US-6124400-A
优先权日:1998-09-10
标 题 :Semicrystalline polymer alloy and process for preparation
发明人：CHIEN JAMES C W
权利人:ACADEMY OF APPLIED SCIENCES
摘要:This invention relates to polymer alloys and the 'one-pot' polymerization process for preparing the same from a single monomer, wherein the product is comprised of two semi-crystalline homopolymers having different micro-structures and a well-defined block copolymer having alternating sequences of the two structural segments of the homopolymers, and with the formed alloy being 'naturally' compatible without the need for thermomechanical mixing or addition of a compatibilizing additive, including the presence of a comonomer and formed with catalyst compositions enabling the direct synthesis of 'naturally' compatibilized polymer alloy that combines four components: two components being organometallic complexes of Group IVB or VIII elements, a third component being a cocatalyst which irreversibly reacts with at least one nonhapto ligand on the transition metal complex, and a fourth component that is a cross-over agent selected from the group of hydrocarbyl or substituted hydrocarbyl compound of Group IIA, IIB or IIIA elements.

专利号:US-2024097109-A1
优先权日:2021-02-11
标 题:Bottom-Up, Scalable Synthesis Of Oxide-Based Sub-Nano And Nanofilaments And Nanofilament-Based Two-Dimensional Flakes And Mesoporous Powders
发明人：BARSOUM MICHEL W; BADR HUSSEIN OSAMA
权利人:UNIV DREXEL
摘要:Provided are methods to convert—through a bottom-up approach—binary and ternary titanium carbides, nitrides, borides, phosphides, aluminides, and silicides into lepidocrocitic nanofilaments that in some cases self-assemble into 2D flakes by immersing them in a quaternary ammonium solution at moderate temperatures. The resulting flakes can comprise nanofilaments in cross-section, some of which nanofilaments can be few microns long in some instances.

专利号:WO-2022174264-A1
优先权日:2021-02-11
标题:Bottom-up, scalable synthesis of oxide-based sub-nano and nanofilaments and nanofilament-based two-dimensional flakes and mesoporous powders
发明人：BADR HUSSEIN O; BARSOUM MICHEL W
权利人:UNIV DREXEL
摘要:Provided are methods to convert - through a bottom-up approach – binary and ternary titanium carbides, nitrides, borides, phosphides, aluminides, and silicides into nanofilaments that in some cases self-assemble into 2D flakes by immersing them in a quaternary ammonium solution at moderate temperatures. The resulting flakes can be C-containing anatase-based layers that are in turn comprised of nanofilaments in cross-section, some of which nanofilaments can be few microns long in some instances. Electrodes made from these materials performed well in energy systems. The materials also reduce the viability of some cancer cells. Also provided are mesoporous materials, devices, and related methods.

专利号:WO-2010085006-A1
优先权日:2009-01-20
标题:Fabrication method of nano-sized metal carbide powder using self-propagating high-temperature synthesis
发明人：WON CHANG WHAN; WON HYUNG IL; HAYK NERSISYAN
权利人:IAC IN NAT UNIV CHUNGNAM; WON CHANG WHAN; WON HYUNG IL; HAYK NERSISYAN
摘要:The present invention relates to the method of manufacturing nano-sized metal carbide powders using self-propagating high-temperature synthesis. More particularly, the present provides a method for fabricating nano-sized metal carbide powders, comprising the steps of: (a) dry mixing process for mechanical mixing of metal oxide compounds, reducing agents, carbon source, carburization activators and particle growth inhibitors; (b) inducing process for self-propagating exothermic reaction accompanying reduction and carburization through heating a part of the mixture of the step (a) in the inert gas atmosphere; (c) crushing process for the reacted product of the step(b); and (d) washing and acid treatment process using distillated water and acid solution, respectively. Using the manufacturing method of the present invention, metal carbide powders having particle size below 100nm can be manufactured. In particular, this method has advantages of thermal efficiency, simple process and short processing time.