CAJ | 학술논문

采用不同前驱体，硝酸镍、醋酸镍、氯化镍和草酸镍，十二烷基磺酸钠作为有机改性剂，浸渍法制备一系列纳米镍催化剂，并用XRD和TEM等技术对四组催化剂的物相、比表面积进行了表征。以葡萄糖加氢制山梨醇反应考察催化剂的活性，结果表明，纳米镍催化剂的活性与镍前驱体的性质，以及纳米镍的尺寸有着紧密关系。其中以氯化镍为前驱体制备的催化剂颗粒尺寸小且散度更高，在温度120℃，压力3.5 MPa下葡萄糖转化率可达93.9%，山梨醇的选择性可达90.1%，同时可循环使用3~4次。
채용불동전구체，초산얼、작산얼、록화얼화초산얼，십이완기광산납작위유궤개성제，침지법제비일계렬납미얼최화제，병용XRD화TEM등기술대사조최화제적물상、비표면적진행료표정。이포도당가경제산리순반응고찰최화제적활성，결과표명，납미얼최화제적활성여얼전구체적성질，이급납미얼적척촌유착긴밀관계。기중이록화얼위전구체제비적최화제과립척촌소차산도경고，재온도120℃，압력3.5 MPa하포도당전화솔가체93.9%，산리순적선택성가체90.1%，동시가순배사용3~4차。
A series of nickel nanoparticles catalysts were prepared by using different precursors,nickel ni-trate,nickel acetate,nickel chloride,and nickel oxalate,and sodium dodecyl sulphonate as organic modifi-ers. Catalyst phase and the specific surface area of catalyst have been characterized by means of XRD and TEM. The activity of catalysts were studied for the hydrogenation of glucose to sorbitol. The results show that the size and structure of nickel nanoparticles were close relationship with nickel precursor. When the nickel chloride particles as precursor,the catalytic has smaller diameter and higher divergence,thereby improving the catalytic activity. The glucose can be 93. 9% converted with 90. 1% selectivity to sorbitol at 120 ℃ and 3. 5 MPa pressure,and it can be recycled 3~4 times with no loss of catalytic activity.