城市路面除雪

简介新发现的盐水化雪负面效果及新型融雪剂,展望未来城市路面除雪系统。     

基于水性聚氨酯和糠醛基DASA的可持续高物性双重隐形防伪涂层

将疏水的生物质基糠醛变色分子Donor-acceptor Stenhouse adducts(DASA)用十二烷基磺酸钠包裹后,将其加入到环境友好的阴离子型水性聚氨酯(Waterborne polyurethane,WPU)中,制备了一种革制品用高物性双重隐形防伪涂饰剂DASA-WPU.涂覆了该材料的合成革,经加热或紫...     

环境友好负载试剂催化剂的研究进展

本文综述了环境友好负载试剂型催化剂研究进展,探讨了新型负载试剂催化剂的发展前景。     

肉桂醛绿色合成新方法

提出了一种以水为反应介质合成肉桂醛的新方法.在近临界水中,以苯甲醛和乙醛为原料,在无外加任何催化剂的条件下,合成肉桂醛.在温度220～300 ℃范围内,测定了温度和反应时间对苯甲醛转化率和肉桂醛收率的影响.对反应条件进行了优化,在反应温度260 ℃,压力16 MPa,反应物和水体积比1∶15,反应时间5 h条件下,肉桂醛产率可达16.6%.     

Searching for “Environmentally-Benign” Antifouling Biocides

As the result of the ecological impacts from the use of tributyltins (TBT) in shipping, environmental legislation for the registration of chemicals for use in the environment has grown to a monumental challenge requiring product dossiers to include information on the environmental fate and behavior of any chemicals. Specifically, persistence, bioaccumulation and toxicity, collectively known as PBT, are properties of concern in the assessment of chemicals. However, existing measurements of PBT properties are a cumbersome and expensive process, and thus not applied in the early stages of the product discovery and development. Inexpensive methods for preliminary PBT screening would minimize risks arising with the subsequent registration of products. In this article, we evaluated the PBT properties of compounds reported to possess anti-fouling properties using QSAR (quantitative structure-activity relationship) prediction programs such as BIOWIN™ (a biodegradation probability program), KOWWIN™ (log octanol-water partition coefficient calculation program) and ECOSAR™ (Ecological Structure Activity Relationship Programme). The analyses identified some small (M_r < 400) synthetic and natural products as potential candidates for environmentally benign biocides. We aim to demonstrate that while these methods of estimation have limitations, when applied with discretion, they are powerful tools useful in the early stages of research for compound selection for further development as anti-foulants.     

国内住宅工业化技术应用研究

工业化住宅是指采用工业化、产业化生产经营方式生产的住宅,是住宅产业化的标志性产品。对国内住宅工业化企业中节能环保技术应用进行了调查,分为节能环保技术的综合应用、工业化装修技术、太阳能利用技术等,为其他运用住宅工业化技术的企业提供了借鉴。     

二氧化硅作为新型环保吸附剂在食用油中的 高效吸附作用

针对常规油脂脱色存在油脂色泽过浅的问题,以活性白土作对比,将二氧化硅用于葵花籽油的脱色,通过测定不同添加量二氧化硅脱色葵花籽油的色泽、杂质含量、氧化诱导期及风险物质含量,考察二氧化硅的吸附脱色效果。结果表明：二氧化硅（0.1%~0.5%）添加量脱色葵花籽油的磷含量、苯并（a）芘和黄曲霉毒素B1含量与0.5%活性白土脱色葵花籽油的相当,但与0.5%活性白土相比,0.1%二氧化硅脱色可以在保持葵花籽油色泽的同时,达到葵花籽油中的皂未检出和氧化诱导期显著延长的效果,说明二氧化硅在食用油中具有较好的吸附脱色效果。