1%) towards 1-octene and catalytic activity for ethylene tetramerization in the presence of Cr(Ⅲ) compounds (chromium chloride tetrahydrofuran or chromium acetyl acetonate) and methylaluminoxane.
利用氯化二苯基膦与二胺类化合物反应生成二苯基膦胺配体,它与四氢呋喃氯化铬或乙酰丙酮铬在甲基铝氧烷的存在下显示出较高的催化乙烯四聚的活性和较高的生成1-辛烯选择性(最高可达73·1%)。
The reaction mechanism of ethylene tetramerization for the preparation of 1-octene was analyzed.
介绍了传统乙烯齐聚生产1-辛烯工艺,分析了乙烯四聚反应制1-辛烯机理,叙述了乙烯四聚制1-辛烯铬系催化体系中配体、助催化剂和促进剂的国内外最新进展。
Study on new synthesis of metaldehyde;
四聚乙醛合成新工艺的研究
The yield of metaldehyde could reach 8%~15%.
介绍了用盐酸复合催化剂由乙醛合成四聚乙醛的生产工艺,该工艺反应在-15～5℃下进行,温度升降平稳,易于控制,四聚乙醛得率8%～15%。
Metaldehyde(Ⅰ)is obtained in relatively high yields(15%～20%) by polymerizing with acetaldehyde(Ⅱ) in the presence of compound hydrochloric acid catalyst and under temperature between -15?℃ and 15?℃.
本研究使用盐酸复合催化剂合成四聚乙醛 (Ⅰ )的方法。
Detection of the cytomegalovirus antigen-specific cytotoxic T lymphocytes in human peripheral blood mononuclear cells by using MHC class I tetramer technique;
四聚体技术检测人外周血巨细胞病毒抗原特异性CTL
Expression and refolding of a HLA-A*0203-BSP fusion protein and identification of its tetramers;
HLA-A*0203-BSP的表达和复性及其四聚体的鉴定
Preparation and identification of HLA-(A*1101)-GPI tetramer loading with human cytomegalovirus pp65 antigen peptide;
负载HCMV pp65抗原肽的HLA-A*1101-GPI四聚体的制备和鉴定