表面技术
錶麵技術
표면기술
SURFACE TECHNOLOGY
2015年
8期
65-70
,共6页
李忠%王丽娜%季付翔%谢广文
李忠%王麗娜%季付翔%謝廣文
리충%왕려나%계부상%사엄문
化学镀%Cu-Co-P%非晶合金%催化剂%硼氢化钠%水解
化學鍍%Cu-Co-P%非晶閤金%催化劑%硼氫化鈉%水解
화학도%Cu-Co-P%비정합금%최화제%붕경화납%수해
electroless plating%Cu-Co-P%amorphous alloy%catalysts%NaBH4%hydrolysis
目的：优化Cu-Co-P非晶合金的化学镀工艺,研究其对硼氢化钠水解制氢的催化性能。方法以铁片为基体,研究化学镀Cu-Co-P非晶合金的制备工艺,探讨镀液成分对沉积速率、镀液稳定性及镀层质量的影响,并根据研究结果筛选出化学镀Cu-Co-P的优化配方。采用该配方对氧化铝(γ-Al2 O3)基体施镀,制备出负载型Cu-Co-P/γ-Al2 O3非晶合金催化剂,对其组成、形貌和结构等进行表征。利用硼氢化钠水解制氢实验,评价制备的负载型Cu-Co-P多元合金催化剂的催化性能。结果根据优化配方制备出的负载型非晶合金Cu-Co-P/γ-Al2 O3催化剂的比表面积为233 m2/g,相对组成为57.85%Cu+39.69%Co钴+2.46%P(均为质量分数)。45℃条件下,在20 mL含1 g硼氢化钠和1 g氢氧化钠的溶液中,硼氢化钠水解制氢的速率为1295 mL/( g·min)。结论化学镀Cu-Co-P的优化配方组成为：硫酸钴20 g/L,硫酸铜0.7 g/L,次亚磷酸钠40 g/L,柠檬酸钠20 g/L,EDTA-2Na 10 g/L,氟化铵25 g/L。工艺参数为：温度(85±1)℃,pH=9。
目的：優化Cu-Co-P非晶閤金的化學鍍工藝,研究其對硼氫化鈉水解製氫的催化性能。方法以鐵片為基體,研究化學鍍Cu-Co-P非晶閤金的製備工藝,探討鍍液成分對沉積速率、鍍液穩定性及鍍層質量的影響,併根據研究結果篩選齣化學鍍Cu-Co-P的優化配方。採用該配方對氧化鋁(γ-Al2 O3)基體施鍍,製備齣負載型Cu-Co-P/γ-Al2 O3非晶閤金催化劑,對其組成、形貌和結構等進行錶徵。利用硼氫化鈉水解製氫實驗,評價製備的負載型Cu-Co-P多元閤金催化劑的催化性能。結果根據優化配方製備齣的負載型非晶閤金Cu-Co-P/γ-Al2 O3催化劑的比錶麵積為233 m2/g,相對組成為57.85%Cu+39.69%Co鈷+2.46%P(均為質量分數)。45℃條件下,在20 mL含1 g硼氫化鈉和1 g氫氧化鈉的溶液中,硼氫化鈉水解製氫的速率為1295 mL/( g·min)。結論化學鍍Cu-Co-P的優化配方組成為：硫痠鈷20 g/L,硫痠銅0.7 g/L,次亞燐痠鈉40 g/L,檸檬痠鈉20 g/L,EDTA-2Na 10 g/L,氟化銨25 g/L。工藝參數為：溫度(85±1)℃,pH=9。
목적：우화Cu-Co-P비정합금적화학도공예,연구기대붕경화납수해제경적최화성능。방법이철편위기체,연구화학도Cu-Co-P비정합금적제비공예,탐토도액성분대침적속솔、도액은정성급도층질량적영향,병근거연구결과사선출화학도Cu-Co-P적우화배방。채용해배방대양화려(γ-Al2 O3)기체시도,제비출부재형Cu-Co-P/γ-Al2 O3비정합금최화제,대기조성、형모화결구등진행표정。이용붕경화납수해제경실험,평개제비적부재형Cu-Co-P다원합금최화제적최화성능。결과근거우화배방제비출적부재형비정합금Cu-Co-P/γ-Al2 O3최화제적비표면적위233 m2/g,상대조성위57.85%Cu+39.69%Co고+2.46%P(균위질량분수)。45℃조건하,재20 mL함1 g붕경화납화1 g경양화납적용액중,붕경화납수해제경적속솔위1295 mL/( g·min)。결론화학도Cu-Co-P적우화배방조성위：류산고20 g/L,류산동0.7 g/L,차아린산납40 g/L,저몽산납20 g/L,EDTA-2Na 10 g/L,불화안25 g/L。공예삼수위：온도(85±1)℃,pH=9。
ABSTRACT:Objective To optimize the preparation process of Cu-Co-P amorphous alloy and to study its catalytic performance for hydrogen generation in the hydrolysis of sodium borohydride. Methods The amorphous alloy Cu-Co-P was prepared on iron sheets by electroless deposition method. The effects of bath composition on deposition rate, bath stability and coating quality were investi-gated. The optimized formulation was screened out based on the research results. The supported amorphous alloy catalysts Cu-Co-P/γ-Al2 O3 were synthesized according to the optimized formulation. The composition, surface morphology and phase structure of the deposited Cu-Co-P/γ-Al2 O3 catalyst were characterized. The catalytic properties of the prepared multiple amorphous alloy cata-lysts Cu-Co-P were investigated using the hydrolysis reaction of sodium borohydride solution. Results The BET surface area of the obtained supported Cu-Co-P/γ-Al2 O3 amorphous alloy catalyst was 233 m2/g, and it contained 57. 85wt% Cu, 39. 69wt% Co and 2. 46wt% P. A hydrogen generation rate of 1295 mL/(g·min) was achieved at 45 ℃ by hydrolysis of NaBH4 solution containing 1 g NaBH4 and 1 g NaOH. Conclusion The optimized electroless plating formulation of Cu-Co-P was 20 g/L cobalt sulfate hepta-hydrate, 0. 7 g/L copper sulfate pentahydrate, 40 g/L sodium hypophosphite monohydrate, 20 g/L trisodium citrate dehydrate, 10 g/L ethylenediamine tetraacetic acid disodium salt and 25 g/L ammonium fluoride. The process was controlled at (85±1) ℃ and pH=9.
