Beijing Institute of Petrochemical Technology

About: Beijing Institute of Petrochemical Technology is a education organization based out in Beijing, China. It is known for research contribution in the topics: Catalysis & Corrosion. The organization has 2468 authors who have published 1937 publications receiving 19270 citations.

Insight into the Role of Pd State on Pd‐Based Catalysts in o‐Xylene Oxidation at Low Temperature

Abstract: Pd-based catalysts are long known to be efficient for catalytic oxidation of volatile organic compounds (VOCs), but the effect of the Pd state on the activity remains controversial. In this study, we prepared a series of Pd supported on Co3O4, MnO2, CeO2, TiO2, Al2O3, SiO2 catalysts. The as-prepared catalysts were pretreated by NaBH4 and H2 reduction, respectively, and then tested towards o-xylene oxidation. The samples were next characterized to investigate how the Pd state and the support type affect the catalytic activity. The test and characterization results clearly show that the metallic Pd species is much more active than the Pd oxide species for o-xylene oxidation at low temperatures, independent of the presence of reducible oxides as supports. Furthermore, NaBH4 pretreatment could avoid undesired support reduction; thus, it is a more appropriate method than H2 reduction for the preparation of supported metallic noble-metal catalysts.

Development of functional docetaxel nanomicelles for treatment of brain glioma.

Abstract: The efficacy of anticancer drugs is rather limited in the treatment of brain glioma due to the hindrance of the blood-brain barrier (BBB). Herein, we reported an easy formulation of functional docetaxel nanomicelles for the treatment of brain glioma using a graft copolymer soluplus as basic material through dual-modifications with a glucose-lipid derivative and a dequalinium-lipid derivative. The studies were performed on brain glioma U87MG cells, in vitro BBB models and brain glioma-bearing nude mice. The functional docetaxel nanomicelles were approximately 100 nm. The results demonstrated that the functional docetaxel nanomicelles could transport across the BBB, enhance the cellular uptake, target to the mitochondria, induce the apoptosis, increase the cytotoxicity in the brain glioma cells, and extend survival span of the brain glioma-bearing mice. The action mechanisms were associated with dual-modifications by the glucose-lipid derivative and the dequalinium-lipid derivative, both of which are beneficial for the transport across the BBB. Furthermore, the modification with dequalinium-lipid derivative was able to target to the brain glioma cells and to the mitochondria. In conclusion, the functional docetaxel nanomicelles would be a promising formulation for the treatment of brain glioma, deserving further development for clinical trials.

New Supercapacitors Based on the Synergetic Redox Effect between Electrode and Electrolyte.

Abstract: Redox electrolytes can provide significant enhancement of capacitance for supercapacitors. However, more important promotion comes from the synergetic effect and matching between the electrode and electrolyte. Herein, we report a novel electrochemical system consisted of a polyanilline/carbon nanotube composite redox electrode and a hydroquinone (HQ) redox electrolyte, which exhibits a specific capacitance of 7926 F/g in a three-electrode system when the concentration of HQ in H2SO4 aqueous electrolyte is 2 mol/L, and the maximum energy density of 114 Wh/kg in two-electrode symmetric configuration. Moreover, the specific capacitance retention of 96% after 1000 galvanostatic charge/discharge cycles proves an excellent cyclic stability. These ultrahigh performances of the supercapacitor are attributed to the synergistic effect both in redox polyanilline-based electrolyte and the redox hydroquinone electrode.