The isomerization of light paraffin over HZSM-5-Ni-Mo-F synthetic zeolite catalysts was studied, and the effects of reaction conditions on the isomerization were investigated. The results show that the optimum reactio...The isomerization of light paraffin over HZSM-5-Ni-Mo-F synthetic zeolite catalysts was studied, and the effects of reaction conditions on the isomerization were investigated. The results show that the optimum reaction condition can be obtained to enhance the research octane number (RON) of product and the liquid yield. The optimum experimental condition is: HZSM-5 catalyst with 1.5wt% of Ni, 2wt% of Mo and 0.4wt% of F, at a temperature of 345℃ and a reaction mass hourly space velocity (MHSV) of 0.2 h-1. The isomerization reaction of light paraffin from Tarim refinery was studied and the research octane number (RON) of gasoline product could be enhanced by 20 units under the condition of nonhydrogenization and optimum experimental status.展开更多
目的研究紫玉盘(Uvaria microcarpaChamp ex Benth)茎和叶的显微结构及其内生真菌的分布。方法采用石蜡永久制片和光学显微摄像的方法。结果与结论紫玉盘的茎次生构造由周皮、皮层及维管组织组成;次生木质部由轴向系统和径向系统构成,...目的研究紫玉盘(Uvaria microcarpaChamp ex Benth)茎和叶的显微结构及其内生真菌的分布。方法采用石蜡永久制片和光学显微摄像的方法。结果与结论紫玉盘的茎次生构造由周皮、皮层及维管组织组成;次生木质部由轴向系统和径向系统构成,轴向系统由导管和木薄壁细胞组成,径向系统由木射线构成;韧皮部由筛管、韧皮薄壁细胞和韧皮纤维组成,韧皮薄壁组织与韧皮纤维切向相间排列,韧皮射线明显。叶为异面叶,由表皮、叶肉和叶脉3部分组成。内生真菌只侵染皮层薄壁细胞、韧皮部细胞,不侵染木质部;在叶中未发现内生真菌的分布。展开更多
文摘The isomerization of light paraffin over HZSM-5-Ni-Mo-F synthetic zeolite catalysts was studied, and the effects of reaction conditions on the isomerization were investigated. The results show that the optimum reaction condition can be obtained to enhance the research octane number (RON) of product and the liquid yield. The optimum experimental condition is: HZSM-5 catalyst with 1.5wt% of Ni, 2wt% of Mo and 0.4wt% of F, at a temperature of 345℃ and a reaction mass hourly space velocity (MHSV) of 0.2 h-1. The isomerization reaction of light paraffin from Tarim refinery was studied and the research octane number (RON) of gasoline product could be enhanced by 20 units under the condition of nonhydrogenization and optimum experimental status.
文摘目的研究紫玉盘(Uvaria microcarpaChamp ex Benth)茎和叶的显微结构及其内生真菌的分布。方法采用石蜡永久制片和光学显微摄像的方法。结果与结论紫玉盘的茎次生构造由周皮、皮层及维管组织组成;次生木质部由轴向系统和径向系统构成,轴向系统由导管和木薄壁细胞组成,径向系统由木射线构成;韧皮部由筛管、韧皮薄壁细胞和韧皮纤维组成,韧皮薄壁组织与韧皮纤维切向相间排列,韧皮射线明显。叶为异面叶,由表皮、叶肉和叶脉3部分组成。内生真菌只侵染皮层薄壁细胞、韧皮部细胞,不侵染木质部;在叶中未发现内生真菌的分布。
