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111.发明公开
公开(公告)号：KR1020030076851A
公开(公告)日：2003-09-29
申请号：KR1020020015828
申请日：2002-03-23
Applicant: 한국화학연구원
CPC classification number: B01J37/0009 , B01J23/80 , B01J37/038 , C07C5/322 , C07C29/149
Abstract: PURPOSE: A method for preparing copper/silica catalyst used in hydrogenation and dehydrogenation of organic compounds using acidic waste solution containing copper is provided. CONSTITUTION: The method for preparing copper/silica catalyst comprises a step (a) of preparing an aqueous copper solution by adding copper compound and arbitrary zinc compound to an acidic waste solution containing copper; a step (b) of preparing a copper slurry solution by adding a precipitant solution to the aqueous copper solution; a step (c) of preparing copper/silica slurry solution by adding colloidal silica solution to the copper slurry solution and stirring the colloidal silica solution and copper slurry solution; a step (d) of separating sediment and rinsing the separated sediment after aging the copper/silica slurry solution at a temperature of 50 to 100 deg.C; and a step (e) of drying and firing the rinsed sediment, wherein the precipitant is ammonia, or bicarbonate, carbonate or hydroxide of alkali metal, wherein the colloidal silica solution is added to the copper slurry solution in such a way that a weight ratio (CuO/SiO2) of copper oxide to silica in produced catalyst is in the range of 0.3-9.0/1, wherein zinc compound is used, and the colloidal silica solution is added to the copper slurry solution in such a way that a weight ratio (CuO/ZnO/SiO2) of copper oxide to zinc oxide to silica in produced catalyst is in the range of 0.3-9.0/0.01-3.0/1, wherein colloidal silica is stabilized by ammonium (NH4¬+) or Na¬+ or other alkali metal and has particle size of 4 to 60 nm, surface area of 100 to 300 m¬2/g and concentration of 5 to 60 wt.% based on silica, and wherein the aging is performed at a temperature of 50 to 100 deg.C for 0.5 to 24 hours.
Abstract translation: 目的：提供一种使用含铜的酸性废液进行有机化合物氢化脱氢的铜/二氧化硅催化剂的制备方法。 构成：制备铜/二氧化硅催化剂的方法包括通过在含铜的酸性废溶液中加入铜化合物和任意的锌化合物来制备铜水溶液的步骤（a） 通过向铜水溶液中添加沉淀剂溶液来制备铜浆液的步骤（b）; 通过向铜浆液中加入胶体二氧化硅溶液并搅拌胶体二氧化硅溶液和铜浆液，制备铜/二氧化硅浆料溶液的步骤（c）; 步骤（d）在50〜100℃的温度下对沉淀物进行分离并漂洗分离出的沉淀物; 以及干燥和烧制漂洗后的沉淀物的步骤（e），其中所述沉淀剂是氨，或碱金属的碳酸氢盐，碳酸盐或氢氧化物，其中所述胶体二氧化硅溶液以这样的方式加入到铜浆液中： 在制备的催化剂中氧化铜与二氧化硅的（CuO / SiO 2）在0.3-9.0 / 1的范围内，其中使用锌化合物，并将胶体二氧化硅溶液加入到铜浆液中，使得重量比 在所制备的催化剂中，氧化铜与氧化锌对二氧化硅的氧化铜（CuO / ZnO / SiO 2）在0.3-9.0 / 0.01-3.0 / 1的范围内，其中胶体二氧化硅通过铵（NH 4 +）或Na +或 其它碱金属，其粒径为4〜60nm，表面积为100〜300m2 / g，浓度为二氧化硅的5〜60重量％，其中老化在50〜100℃的温度下进行 摄氏0.5-2-24小时。
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公开(公告)号：KR1020000009318A
公开(公告)日：2000-02-15
申请号：KR1019980029631
申请日：1998-07-23
Applicant: 한국화학연구원
IPC: C30B7/00
CPC classification number: C30B7/00
Abstract: PURPOSE: A zinc oxide bulk single crystal is prepared which increases a growth to 1010 direction. CONSTITUTION: The zinc oxide powder is sintered and thrown into a lower part of autoclave, and zinc oxide seed crystal is thrown into an upper part of the autoclave. A mineralizer comprising 2.5- 3.5 mole of potassium hydroxide, 0.5- 1.5 mole of lithium hydroxide and 0.5- 1.0 mole of ammonium hydroxide is thrown into the autoclave and sealed. Temperatures of the upper part and lower part of the autoclave are risen to 330- 350°C and 350- 370°C respectively, and maintained at 350- 400 atm for 20 days to give the zinc oxide single crystal.
Abstract translation: 目的：制备氧化锌本体单晶，其增长到1010方向。 构成：将氧化锌粉末烧结并投入高压釜的下部，将氧化锌晶种投入高压釜的上部。 将包含2.5-3.5摩尔氢氧化钾，0.5-1.5摩尔氢氧化锂和0.5-1.0摩尔氢氧化铵的矿化剂投入高压釜中并密封。 高压釜的上部和下部的温度分别升至330-350℃和350-370℃，并保持在350-400大气压下20天，得到氧化锌单晶。
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公开(公告)号：KR1019970015794A
公开(公告)日：1997-04-28
申请号：KR1019950031860
申请日：1995-09-26
Applicant: 한국화학연구원
IPC: C30B7/10
Abstract: [목적]
본원 발명은 균열이 발생하지 않고 종자결정과 성장영역 계면에 불균질한 성장층의 발생의 억제 및 불순물을 저하시키는 자수정의 제조방법을 제공하는 것을 목적으로 한다.
[구성]
분쇄한 천연수정과 천연철광석을 용기에 넣은 것을 오토크레이브 하단부(원료용액부)에 장착하고, 그 위에 개공된 대류조절관을 얹은 후 +X축 방향을 30。 절단한 (0111)방향의 판상 종자결정을 상단부(결정육성부)에 장착하고 탄산칼슘 수용액에 질산리튬을 첨가하여 조제한 액을 오토클레이브에 채운 후 이를 밀봉하고, 전기 상단부 및 하단부를 고온으로 가열한 상태에서 수열에칭 및 결정을 육성하여 자수정을 얻는다.
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