碱改性剂(Li,Na,K,Cs)在2%Pd / Al 2 O 3催化剂催化2-乙基-9,10-蒽醌氢化中的作用
摘要:
目前的研究集中于碱改性剂(Li,Na,K,Cs)在2%Pd / Al 2 O 3催化剂催化2-乙基-9,10-蒽醌(eAQ)加氢中的作用。通过用适当的碱金属碳酸盐浸渍预还原的2%Pd / Al 2 O 3催化剂,可以制得各种含量的碱改性剂(Me / Pd摩尔比范围为0.5至4,Me-碱金属)。XPS,EDS和TEM测量表明,碱促进剂被引入到氧化铝基质中。CO吸附的微热力学实验证明了CO与催化剂的相互作用导致碱掺杂催化剂使一氧化碳更牢固地结合。Pd / Al 2 O 3中碱助催化剂的存在催化剂在整个eAQ加氢过程中起着至关重要的作用。碱促进剂的性质及其在催化剂中的含量(Me / Pd原子比)非常重要。随着助剂的碱度增加,从Li变为Cs,由它们的存在引起的所有效应都变得更强。在碱掺杂催化剂的存在下,形成的2-乙基氧杂蒽酮(OXO,2-乙基-9,10-蒽氢醌的异构体)的含量高于未掺杂的2%Pd /
The Effect of Particle Size and the Modifier on the Properties of Palladium Catalysts in the Synthesis of Hydrogen Peroxide by the Anthraquinone Method
作者:T. P. Sterenchuk、L. B. Belykh、N. I. Skripov、S. B. Sanzhieva、K. L. Gvozdovskaya、F. K. Schmidt
DOI:10.1134/s0023158418050166
日期:2018.9
reducing agent) and hydrogenation of aromatic rings in 2-ethyl-9,10-anthrahydroquinone (in the case of AlEt3 as a reducing agent). Elementary phosphorus was found to have a promoting effect on the selectivity of palladiumcatalysts in the synthesis of hydrogen peroxide by the anthraquinone method. The main factors that make it possible to control the selectivity of palladiumcatalysts were discussed.
Photocatalytically green synthesis of H<sub>2</sub>O<sub>2</sub>using 2-ethyl-9,10-anthraquinone as an electron condenser
作者:Dandan Zhang、Gangqiang Xu、Tao Chen、Feng Chen
DOI:10.1039/c4ra09702e
日期:——
A high level (∼9 mM) of hydrogen peroxide is photocatalytically synthesized by using O2 as an oxidant and 2-ethyl-9,10-anthraquinone (EAQ) as an electron condenser. The photo-catalytic efficiency of the EAQ-assisted H2O2 production is ca. 10-fold higher than that of H2 generation with Pt/P25.
Xanthones, thioxanthones and acridinones as dna-pk inhibitors
申请人:Halbrook W. James
公开号:US20070167441A1
公开(公告)日:2007-07-19
Compound that inhibit DNA-dependent protein kinase, compositions comprising the compounds, methods of inhibiting the DNA-PK biological activity, methods of sensitizing cells the agents that cause DNA lesions, and methods of potentiating cancer treatment are disclosed.