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13 条记录 (耗时 0.015 秒)

    Selective CO methanation catalysis
    5.
    发明授权
    Selective CO methanation catalysis 有权
    选择性CO甲烷化催化

    公开(公告)号：US08877674B2

    公开(公告)日：2014-11-04

    申请号：US11413129

    申请日：2006-04-26

    申请人： Robert A. Dagle ,  Yong Wang ,  Guanguang Xia

    发明人： Robert A. Dagle ,  Yong Wang ,  Guanguang Xia

    IPC分类号： B01J23/00 ,  B01J23/02 ,  B01J23/08 ,  B01J23/40 ,  B01J23/42 ,  B01J23/56 ,  B01J21/04 ,  B01J20/00 ,  C01B3/58 ,  B01J35/00 ,  B01J23/46 ,  B01J35/10

    CPC分类号： C01B3/586 ,  B01J21/04 ,  B01J23/462 ,  B01J35/002 ,  B01J35/006 ,  B01J35/1019 ,  B01J2219/00781 ,  C01B2203/0445 ,  C01B2203/047

    摘要： Carbon monoxide (CO) is selectively reacted with hydrogen (H2) over a ruthenium (Ru) on alumina catalyst at a temperature of about 210 to about 290° C. To be a viable option for micro catalytic fuel processing devices, highly active, selective, and stable catalysts must be demonstrated with as large a temperature window for feasible operation as possible. We have studied the effects of metal loading, preparation method, pretreatment conditions, and choice of support on the performance of Ru-based catalysts for such applications. Catalyst testing results and catalyst characterization using XRD and BET are discussed. In one example, operating at a gas hourly space velocity (GHSV) of 13,500 hr−1, a 3% Ru/Al2O3 catalyst yielded CO outputs less than 100 ppm in a temperature range from 240° C. to 285° C., while not exceeding a hydrogen consumption of 10%. This catalyst was further successfully demonstrated in a microchannel device.

    摘要翻译： 在约210至约290℃的温度下，一氧化碳（CO）与氧化钌（Ru）在钌（Ru）上选择性地与氢（H 2）反应。作为微催化燃料处理装置的可行选择，高活性，选择性 必须用尽可能高的操作温度窗来证明稳定的催化剂。 我们研究了金属负载的影响，制备方法，预处理条件以及对这种应用中Ru基催化剂性能的支持选择。 讨论了使用XRD和BET的催化剂测试结果和催化剂表征。 在一个实例中，以13,500hr-1的气时空速（GHSV）操作，3％Ru / Al 2 O 3催化剂在240℃至285℃的温度范围内产生小于100ppm的CO，而 不超过10％的氢消耗。 该催化剂在微通道装置中进一步成功地证明。

    Dimethyl ether production from methanol and/or syngas
    7.
    发明授权
    Dimethyl ether production from methanol and/or syngas 有权
    由甲醇和/或合成气生产二甲醚

    公开(公告)号：US08957259B2

    公开(公告)日：2015-02-17

    申请号：US11241321

    申请日：2005-09-30

    申请人： Robert A. Dagle ,  Yong Wang ,  Eddie G. Baker ,  Jianli Hu

    发明人： Robert A. Dagle ,  Yong Wang ,  Eddie G. Baker ,  Jianli Hu

    IPC分类号： C07C41/09 ,  C07C41/01

    CPC分类号： C07C41/09 ,  C07C41/01 ,  C07C43/043

    摘要： Disclosed are methods for producing dimethyl ether (DME) from methanol and for producing DME directly from syngas, such as syngas from biomass. Also disclosed are apparatus for DME production. The disclosed processes generally function at higher temperatures with lower contact times and at lower pressures than conventional processes so as to produce higher DME yields than do conventional processes. Certain embodiments of the processes are carried out in reactors providing greater surface to volume ratios than the presently used DME reactors. Certain embodiments of the processes are carried out in systems comprising multiple microchannel reactors.

    摘要翻译： 公开了从甲醇生产二甲醚（DME）并直接从合成气生产DME的方法，例如来自生物质的合成气。 还公开了用于DME生产的装置。 所公开的方法通常在比常规方法更低的接触时间和更低的压力的较高温度下起作用，以产生比常规方法更高的DME产率。 该方法的某些实施方案在提供比目前使用的DME反应器更大的表面与体积比的反应器中进行。 该方法的某些实施方案在包括多个微通道反应器的系统中进行。