3. Except for the amorphous Al2O3 supported Ni, all the other three samples showed distinct metallic Ni peaks (PDF#87-0712) and strong diffraction peaks which belong to the support materials, referring to ZrO2 (PDF#86-1451), TiO2 (PDF#75-1753) and CeO2 (PDF#78-0694). In addition, ...
所有谱线均在2θ = 44.6°、52.0°与76.6°位置出现衍射峰,分别对应Ni(111)、(200)与(220)晶面的特征衍射(JCPDS card No. 87-0712)。在300 ℃处理样品的谱线上出现的Ni衍射峰,其强度较弱且明显宽化。这表明,硝酸镍与淀粉原位分解生成的氧化镍与碳具有很高的活性,在300 ℃条件下即可发生碳热还原反应生成Ni...
5. The nickel particles coated on the surface of the magnetic mesoporous silica material was identified as FCC Ni (JCPDS card (No. 87-0712)) by XRD analysis (FIG. 6). EXAMPLE 2 High-Level Expression of Catechol Dioxygenase In order to obtain an enzyme to be immobilized on the magnetic ...
殷瓦合金(invar,也称为殷钢) 一种镍铁合金,其成分为镍36%,铁63.8%,碳0.2%,它的热膨胀系数极低,能在很宽的温度范围内保持固定长度。艾林瓦合金(elinvar),是一种镍铁铬合金,成分为镍33%~35%,铁53%~61%,铬4%~5%,钨1%~3%,锰0.5%~2%,硅0.5%~2%,碳0.5%~2%,它在相当宽...
对于Ni/SiO2催化剂,在44.6°、51.9°和76.3°处的衍射峰归属为金属Ni(PDF#87-0712)。对于Ni/CeO2-SiO2催化剂,观测到CeO2和SiO2载体的特征衍射峰,但没有观测到Ni的晶相衍射峰,归因于Ni与CeO2的金属-载体相互作用强于SiO2,金属Ni更容易落位在CeO2载体上,导致高分散Ni形成[15,16]。对于Ni/CeO2催化剂,位于...
5. The nickel particles coated on the surface of the magnetic mesoporous silica material was identified as FCC Ni (JCPDS card (No. 87-0712)) by XRD analysis (FIG. 6). Example 2 High-Level Expression of Catechol Dioxygenase In order to obtain an enzyme to be immobilized on the magnetic ...