采用固定床反应器,研究了Cu Cr Ca Ba催化剂上糠醛常压选择加氢制2 甲基呋喃的反应.详细考察了反应条件对催化性能的影响.结果表明,添加Ca Ba助剂显著提高了催化剂对目的产物的选择性,Cu Cr Ca Ba催化剂在200~220℃,液时空速0.2~0.6h...采用固定床反应器,研究了Cu Cr Ca Ba催化剂上糠醛常压选择加氢制2 甲基呋喃的反应.详细考察了反应条件对催化性能的影响.结果表明,添加Ca Ba助剂显著提高了催化剂对目的产物的选择性,Cu Cr Ca Ba催化剂在200~220℃,液时空速0.2~0.6h-1,氢醛摩尔比6~16的条件下,具有良好的活性和选择性,糠醛转化率 99.8%,2 甲基呋喃选择性 90.3%.展开更多
A series of samples in Cu-Cr-O composite oxide system were synthesized by citratecomplexation method. The catalytic activities of samples were evaluated using CO oxidation astest reaction, and structural imperfection ...A series of samples in Cu-Cr-O composite oxide system were synthesized by citratecomplexation method. The catalytic activities of samples were evaluated using CO oxidation astest reaction, and structural imperfection was determined by XRD analysis. The results indicatethat two phases coexisting under the preparative conditions result in structural imperfection of thesamples, which leads to enhanced activities of Cu-Cr-O composite oxides. The catalytic activityfor CO oxidation reaction increases with Cu3+ contents in the samples.展开更多
文摘A series of samples in Cu-Cr-O composite oxide system were synthesized by citratecomplexation method. The catalytic activities of samples were evaluated using CO oxidation astest reaction, and structural imperfection was determined by XRD analysis. The results indicatethat two phases coexisting under the preparative conditions result in structural imperfection of thesamples, which leads to enhanced activities of Cu-Cr-O composite oxides. The catalytic activityfor CO oxidation reaction increases with Cu3+ contents in the samples.