公开(公告)号：KR100940791B1

公开(公告)日：2010-02-11

申请号：KR1020080024548

申请日：2008-03-17

Applicant: 한국과학기술연구원

Inventor： 김재덕 ,  김재훈 ,  홍승아

IPC: C11B13/00

CPC classification number: Y02W30/74

Abstract: 본 발명은 폐식용유로부터 산패되어 생성된 물질을 제거하는 방법에 관한 것으로 보다 자세하게는 초임계 유체를 이용하여 경제적이고 환경친화적인 방법으로 폐식용유에 함유된 유리지방산, 공액이중결합물질, 산화생성물 등을 고효율로 제거하여 폐식용유를 고품질의 바이오디젤유의 원료로 사용할 수 있도록 정제하는 방법에 관한 것이다.
초임계 유체, 폐식용유, 바이오디젤, 이산화탄소, 추출, 정제

公开(公告)号：KR101146556B1

公开(公告)日：2012-05-25

申请号：KR1020090128277

申请日：2009-12-21

Applicant: 한국과학기술연구원

Inventor： 김재훈 ,  홍승아 ,  김재덕 ,  박종민 ,  정경윤 ,  조병원

IPC: B82B3/00 ,  H01M10/42

Abstract: PURPOSE: A successive manufacturing method of phosphate positive active material nanoparticles is provided to improve electrochemical features with an introduction of a metal dopant or a nonmetal dopant, and to control a formation of impurity with an introduction of a reducing agent. CONSTITUTION: The successive manufacturing method of phosphate positive active material nanoparticles includes following steps.(a) A lithium precursor solution, an iron precursor solution, a phosphoric acid precursor solution, a metal dopant or nonmetal dopant precursor solution and a reductant solution are prepared respectively.(b) The solutions of the step(a) are introduced consecutively to a mixer under a supercritical or subcritical condition. A solution containing 'phosphate positive active material nanoparticles' having a chemical formula of LiFe1-xMIxPO4 or Li1-xMIIxFePO4(0

公开(公告)号：KR1020090099355A

公开(公告)日：2009-09-22

申请号：KR1020080024548

申请日：2008-03-17

Applicant: 한국과학기술연구원

Inventor： 김재덕 ,  김재훈 ,  홍승아

IPC: C11B13/00

CPC classification number: Y02W30/74

Abstract: A method for purifying the waste edible oil by using a supercritical fluid is provided to increase the activity of an alkali catalyst in the biodiesel production process by removing the generated by-product with a high efficiency and to increase the yield of the produced biodiesel oil. A method for purifying the waste edible oil by using a supercritical fluid comprises the steps of introducing the waste edible oil(50) containing impurities into an extractor(10); continuously introducing a supercritical fluid into the extractor so as to have a first pressure, thereby extracting the impurities from the waste edible oil; reducing the pressure of the supercritical fluid containing the extracted impurities to the second pressure lower than the first pressure to precipitate the impurities; and collecting the remaining waste edible oil. The supercritical fluid is any one selected from propane, butane, dimethylether, and carbon dioxide supercritical fluid.

Abstract translation: 提供了一种通过使用超临界流体来净化废弃食用油的方法，通过高效除去生成的副产物，提高生产生物柴油的产率，提高生物柴油生产过程中碱催化剂的活性。 通过使用超临界流体来净化废弃食用油的方法包括以下步骤：将含有杂质的废食用油（50）引入提取器（10）中; 连续地将超临界流体引入提取器中以具有第一压力，从而从废食用油中提取杂质; 将含有提取的杂质的超临界流体的压力降低到低于第一压力的第二压力以沉淀杂质; 并收集剩余的废食用油。 超临界流体是选自丙烷，丁烷，二甲醚和二氧化碳超临界流体中的任何一种。

公开(公告)号：KR1020110071653A

公开(公告)日：2011-06-29

申请号：KR1020090128277

申请日：2009-12-21

Applicant: 한국과학기술연구원

Inventor： 김재훈 ,  홍승아 ,  김재덕 ,  박종민 ,  정경윤 ,  조병원

IPC: B82B3/00 ,  H01M10/42

CPC classification number: H01M4/5825 ,  B82Y40/00 ,  H01M10/052 ,  Y02E60/122 ,  Y02P70/54

Abstract: PURPOSE: A successive manufacturing method of phosphate positive active material nanoparticles is provided to improve electrochemical features with an introduction of a metal dopant or a nonmetal dopant, and to control a formation of impurity with an introduction of a reducing agent. CONSTITUTION: The successive manufacturing method of phosphate positive active material nanoparticles includes following steps.(a) A lithium precursor solution, an iron precursor solution, a phosphoric acid precursor solution, a metal dopant or nonmetal dopant precursor solution and a reductant solution are prepared respectively.(b) The solutions of the step(a) are introduced consecutively to a mixer under a supercritical or subcritical condition. A solution containing 'phosphate positive active material nanoparticles' having a chemical formula of LiFe1-xMIxPO4 or Li1-xMIIxFePO4(0

Abstract translation: 目的：提供磷酸盐正极活性物质纳米颗粒的连续制造方法，以通过引入金属掺杂剂或非金属掺杂剂来改善电化学特征，并通过引入还原剂来控制杂质的形成。 构成：磷酸正极活性物质纳米颗粒的连续制造方法包括以下步骤：（a）分别制备锂前体溶液，铁前体溶液，磷酸前体溶液，金属掺杂剂或非金属掺杂剂前体溶液和还原剂溶液 （b）步骤（a）的溶液在超临界或亚临界条件下连续引入混合器。 形成含有化学式为LiFe1-xMIxPO4或Li1-xMIIxFePO4（0 <= X <= 0.3，MI和MII为金属或贱金属）的“磷酸盐正极活性物质纳米颗粒”的溶液（c） 将“磷酸盐正极活性物质纳米颗粒”连续地引入到具有高压和高温的反应器中。 磷酸盐正极活性物质纳米颗粒的结晶度增加;（d）含有“磷酸盐正极活性物质纳米颗粒”的溶液被冷却。 （e）分离并收集磷酸盐正极活性物质纳米颗粒。