降低船舶NOx排放的NO催化氧化联合SCR试验研究

用浸渍法制备钴基催化剂,考察了载体、活性组分负载量、焙烧温度、助剂等制备条件对钴基催化剂催化氧化NO性能的影响,结果表明：以ZrO2为载体,活性组分负载量为10%,表面活性剂含量5%,在350℃焙烧的催化剂具有最佳的NO催化氧化性能,在NO进口浓度700ppm、O2体积分数5%、空速27000 h-1的条件下,200℃时NO氧化率可达49%,满足快速SCR的条件。对NO催化剂进行孔隙结构及XRD表征,结果表明催化剂比表面积的大小不是决定催化剂活性的必要条件,而Co3O4晶体平均颗粒尺寸的大小对催化剂活性有一定影响。考察了空速对催化剂效率的影响,发现NO催化氧化剂在较高空速下仍居有一定活性,并对低温、高空速条件下SCR的反应效率有较大提升。在180℃时,SCR的NO去除效率由联合前的53%提高至65%。     

氨分解制氢技术

氨分解制氢技术无CO污染,且流程简单、存储安全可靠,价格低,因此具有广阔的应用前景和更大的经济效益。本文主要介绍了氨分解技术的优势和研究现状,从活性组分、载体、助剂三个方面讨论了氨分解制氢催化剂的研究和发展,同时还对氨分解制氢工艺进行了简单的介绍。氨作为一种清洁的高能量密度氢能载体,氨分解制氢技术的研究一直以来受到人们极大的关注,这为研制高活性氨分解催化剂和发展新型反应器提供了理论依据。     

空间站用常温消氢催化剂催化性能研究

采用XRD、SEM及TEM对催化剂进行表征,催化剂的活性组分是以纳米尺寸高度分散在载体表面上,催化剂具有较大的比表面积(211m2/g)和孔容(0.137mL/g)。在固定床反应器上考查氢气浓度、湿度、空速对催化剂活性的影响以及考核催化剂抗氨气、硫化氢中毒性能和使用寿命,结果表明催化剂具有很高的催化活性、较宽的使用边界条件、较好的抗湿性能、较强的抗中毒性能和超长的使用寿命,已基本能够满足空间内的使用要求。     

活性炭氧化改性及氯化氰消除的应用研究

本文选用硝酸为氧化剂对活性炭进行了处理,考察了硝酸浓度和处理时间对活性炭表面化学性质的影响,通过傅立叶变换红外光谱、X射线衍射仪对改性活性炭进行了表征,考察了以改性活性炭为载体制备炭催化剂对氯化氰的消除性能。结果表明,硝酸浓度和处理时间是影响活性炭表面化学性质的重要因素,低浓度硝酸氧化改性提高了活性炭的表面亲水性而对活性炭的结构没有明显影响,制备的炭催化剂对氯化氰防护时间明显增长。当硝酸浓度为8%,处理时间5h～8h消除氯化氰效果最好。     

金属载体催化剂的研究进展

介绍了近年来金属载体催化剂在表面处理和活性组分负载方面的研究进展，讨论了各种方法的优缺点，并对金属载体催化剂的应用发展进行了综述。     

军用抗陈化炭催化剂

军用炭催化剂是军队防护器材中所必需的重要装填材料，本文概述了炭催化剂载体-活性炭吸附剂的基本结构和吸附性能，介绍了军用浸渍炭催化剂的催化作用和抗陈化性能。     

防毒面具消除一氧化碳催化剂的研制

本文概述了防毒面具消除CO催化剂的载体 活性组分和工艺条件的选择，研制出的FXY－1型催化剂具有消除CO效率高，防护时间长，吸气温度低，抗湿性强，性能稳定等特点，显著地提高了防毒面具的防护能力。     

Mn_xNi_((1-x))O催化剂对LiClO_4分解的催化性能研究

为提高潜艇等密闭空间所使用的氧烛的体积储氧量,通过溶胶-凝胶法制备了Ni:Mn=6:1,3:1,2:1,1:1,1:2,1:3,1:6七种Mnx Ni(1-x)O催化剂,将其与LiClO_4进行热重-差热分析(TG-DTA),通过对比空白样品和各混合样品的起始分解温度和最大分解速率温度,探究了Mn_xNi_((1-x))O催化剂对LiClO_4分解的催化性能。研究结果表明,Mn_xNi_((1-x))O催化剂对LiClO_4分解有很好的催化作用,起始分解温度降低128±13℃,其中Ni:Mn=1:6的催化性能最佳,起始分解温度为312℃,在372℃时的分解速率达到10.8%/min,分解温程最窄。     

臭氧/活性炭催化氧化处理港口化学品废水研究

以含难降解有机物的港口化学品废水为研究对象,采用单因素实验和正交试验方法,研究了臭氧/活性炭催化氧化体系最佳运行参数及对废水降解效果,得到最佳运行方案为:体系pH为9,臭氧投加量700 mg/L,活性炭投加量20 g/L。以该方案连续运行30 d,废水COD_(Cr)去除率在55%～63%,出水COD_(Cr)在800～1 250 mg/L,且B/C比由0.29提高至0.43,可生化性显著提高,为后续生化处理提供数据支持。     

吸附质在活性炭基吸附剂上吸附规律研究

通过研究活性炭种类、活性炭改性及改性活性组分含量等因素对活性炭吸附剂性能的影响,得到不同种类吸附质(以苯、SO2、H2S、NH3为代表物)在活性炭吸附剂上的吸附规律。结果表明:吸附类型为物理吸附,使用具有丰富的微孔孔道结构的吸附剂效果较佳,如未改性的椰壳炭;SO2和H2S为化学吸附和物理吸附同时存在,使用低含量过渡金属改性的煤质炭吸附剂效果较佳,而NH3为纯化学吸附,使用高含量过渡金属改性的煤质炭吸附剂效果较佳。     

Errata

正In the paper"Influence of Fouling Assemblage on the Corrosion Behaviour of Mild Steel in the Coastal Waters of The Gulf of Mannar,India"in Vol.12,No.4,Page:509,References were lost,and the two authors’biographies were identical.The correct text is shown below.We apologize to the authors and our readers for any inconvenience caused by the errors.     

Journal of Marine Science and Application 2014 Sum. Contents

正~~     

33rd International Conference on Ocean,Offshore and Arctic Engineering （OMAE2014）

正San Francisco,California,June 8-13,2014.OMAE 2014 is the ideal forum for researchers,engineers,managers,technicians and students from the scientific and industrial communities from around the world to:·meet and present advances in technology and its scientific support;·to exchange ideas and experiences whilst promoting technological progress and its application in industry·to promote international cooperation in ocean,offshore and arctic engineering.In line with the tradition of excellence of previous OMAE conferences,more than 900 technical papers are planned for presentation.Outreach for Engineers Specialty Forum This Specialty Forum is designed for students and professionals who may not be familiar with the Ocean and Offshore industry,as well as those who have just recently specialized in this field.     

联合作战计划和执行系统

全球指挥控制系统(GCCS)实施当前美国海军网络中心战信息基础设施的联合计划网络。联合作战计划和执行系统(JOPES)支持GCCS实现联合计划。JOPES有两类计划：时间不限的精密预案计划生成作战计划、方案计划或职能计划；时间敏感的危机行动计划生成作战命令或战役方案。前者在和平时期创建的作战计划是后者的计划基础，加速应付危机的能力。     

The 11th International Conference on Hydrodynamics (ICHD 2014)

正19–24 October 2014 SingaporeCONFERENCE THEMES The overall aim of the ICHD Conference is to provide a forum for participants from around the world to review,discuss and present the latest developments in the broad discipline of hydrodynamics and fluid mechanics.The first International Conference on Hydrodynamics(ICHD)was initiated in 1994 in Wuxi,China.Since then,9 more ICHD conferences were held subsequently in Hong Kong,Seoul,Yokohama,Tainan,Perth,Ischia,Nantes,Shanghai and St Petersburg.Evidently the ICHD conference has become an important event among academics,researchers,engineers and operators,working in the fields closely related to the science and technology of hydrodynamics.The 11th ICHD will be held in Singapore in 2014.     

第十二届深水操作会议和展览会(英文)

正November 4-6,2014Moody Gardens HotelConvention Center/Galveston,TX The Deepwater Operations Conference and Exhibition is celebrating its 12th anniversary this year.This growing event will continue the tradition of excellence in addressing operational challenges involved in developing deepwater resources.We will return to the Moody Gardens Hotel and Convention Center on November 5-7,2014 in Galveston,Texas.     

Eastbound or westbound ?

In terms of equal sailing distances, where is the inflexion when ships depart from ports in the Asian Continent to New York via Suez and/or Panama？
The answer is China South Port Group （Hong Kong, Shenzhen and Guangzhou）.     

桥梁防撞设施物理模型试验

物理模型试验是预报防撞设施所受撞击力及优化设计方案的主要方法之一。结合杭州湾大桥柔性防撞设施及东海大桥独立式防撞体设计方案,阐述了船—防撞体撞击试验的基本原理、方法、试验方案及相关试验结果。提出了柔性防撞系统的优化方案。试验结果表明,该方案经济有效,可供预报类似桥梁防撞设施撞击力时参考。     

印尼某电厂码头水工建筑物设计

印尼某电厂项目码头水工建筑物包括码头、防波堤和护岸等主要组成部分。在该项目水工建筑物的设计过程中,综合考虑当地的自然条件、施工能力和材料来源等因素,不断优化结构选型和结构断面。根据不同使用要求,护岸分别采用直立式和斜坡式2种结构型式,推荐的设计方案节省投资、施工方便,可供同类工程设计参考。     

Catalyzing Coastal Management in Kenya and Zanzibar: Building Capacity and Commitment

Site-based projects were initiated in Chawka Bay-Paje, Zanzibar, and Nyali-Bamburi-Shanzu, Kenya, to demonstrate the benefits of an integrated coastal management (ICM) approach for addressing coastal issues such as tourism development and enhancement of resource-dependent village economies in eastern Africa. A two-year, multidonor project used three primary strategies to make rapid, but sustainable, progress toward ICM. These included using interagency government teams for ICM planning, adopting an internationally recognized framework for ICM as a project ''road map,'' and explicitly incorporating capacity-building strategies into all aspects of the project. Within two years, integrated ICM action strategies, prepared through participatory processes, were being implemented at both sites, and both teams were working to expand the scale and scope of ICM in their nation. More importantly, the project helped create committed, capable, interagency groups that continue to work together to address urgent ICM issues.