A process for preparing formic acid by hydrogenation of carbon dioxide in the presence of a tertiary amine (I) and a catalyst at a pressure of from 0.2 to 30 MPa abs and a temperature of from 20 to 200° C., wherein the catalyst is a heterogeneous catalyst comprising gold.
PROCESS FOR PREPARING FORMIC ACID BY REACTING CARBON DIOXIDE WITH HYDROGEN
申请人:Schaub Thomas
公开号:US20120157711A1
公开(公告)日:2012-06-21
The present invention relates to a process for preparing formic acid by reacting carbon dioxide (
1
) with hydrogen (
2
) in a hydrogenation reactor (I) in the presence of
a catalyst comprising an element of group 8, 9 or 10 of the Periodic Table,
a tertiary amine comprising at least 12 carbon atoms per molecule and
a polar solvent comprising one or more monoalcohols selected from among methanol, ethanol, propanols and butanols,
to form formic acid/amine adducts as intermediates which are subsequently thermally dissociated,
where a tertiary amine having a boiling point which is at least 5° C. higher than that of formic acid is used and
a reaction mixture comprising the polar solvent, the formic acid/amine adducts, the tertiary amine and the catalyst is formed in the reaction in the hydrogenation reactor (I) and is discharged from the reactor as output (
3
).
PROCESS FOR PREPARING FORMIC ACID BY REACTION OF CARBON DIOXIDE WITH HYDROGEN
申请人:Schaub Thomas
公开号:US20110319658A1
公开(公告)日:2011-12-29
A process for preparing formic acid by reaction of carbon dioxide (
1
) with hydrogen (
2
) in a hydrogenation reactor (I) in the presence of
a catalyst comprising an element of group 8, 9 or 10 of the Periodic Table,
a tertiary amine comprising at least 12 carbon atoms per molecule and
a polar solvent comprising one or more monoalcohols selected from among methanol, ethanol, propanols and butanols and also water,
to form formic acid/amine adducts as intermediates which are subsequently thermally dissociated, with work-up of the output (
3
) from the hydrogenation reactor (I) in a plurality of process steps, where
a tertiary amine-comprising stream (
13
) from the work-up is used as selective solvent for the catalyst, is proposed.
Process for Preparing Formic Acid by Reaction of Carbon Dioxide with Hydrogen
申请人:Schaub Thomas
公开号:US20120022290A1
公开(公告)日:2012-01-26
A process for preparing formic acid by reaction of carbon dioxide (
1
) with hydrogen (
2
) in a hydrogenation reactor (I) in the presence of
a catalyst comprising an element of group 8, 9 or 10 of the Periodic Table,
a tertiary amine comprising at least 12 carbon atoms per molecule and
a polar solvent comprising one or more monoalcohols selected from among methanol, ethanol, propanols and butanols,
to form formic acid/amine adducts as intermediates which are subsequently thermally dissociated, where the work-up of the output (
3
) from the hydrogenation reactor (I) is carried out by addition of water so as to increase the distribution coefficient of the catalyst between the upper phase (
4
) and the lower phase.
Synthesis of Conjugated Main-Chain Ferrocene-Containing Polymers through Melt-State Polymerization
作者:Qi Luo、Rui Zhang、Jing Zhang、Jiangbin Xia
DOI:10.1021/acs.organomet.9b00312
日期:2019.8.12
edge at 1100 nm) and highthermalstability among reported Fc-containing polymers, which indicates the thiophene-methane-based Fc-containing structure is a good candidate to construct functional polymers through MSP. The lowbandgap and highthermalstability of prepared conjugated metallopolymers show their potential application in conducting materials with high working temperature.
通过将Fc基序与噻吩或噻吩-甲烷基团结合的相应单体的轻松熔融态聚合(MSP),成功制备了两种含共轭主链二茂铁(Fc)的聚合物PFcT8和PFcTP8。选择了简单,低成本的MSP作为方法,而噻吩或噻吩甲烷基团由于其通过简单的加热过程易于聚合的特征而充当了反应位点。制备的金属聚合物通过1 H NMR,FTIR以及光化学和电化学分析,金属含量和热稳定性进行表征。结果表明,获得了具有规则骨架和接近定量金属含量的金属聚合物。另外,金属聚合物PFcTP8具有报道的含Fc的聚合物中最小的光学带隙(在1100 nm处的吸收边)和高的热稳定性,这表明基于噻吩甲烷的Fc含结构是通过MSP构造功能性聚合物的良好候选者。制备的共轭金属聚合物的低带隙和高热稳定性显示了它们在具有高工作温度的导电材料中的潜在应用。