NOVELTY - Cracking hydrocarbon material in a nozzle reactor involves providing a nozzle reactor containing a reactor body, a first material injector, and a second material feed port penetrating the reactor body; injecting a stream of cracking material through the first material injector into the reactor body; and injecting hydrocarbon material through the second material feed port into the reactor body; where the cracking material is methanol, ethanol, ethane, propane, biodiesel, carbon monoxide, and/or nitrogen.    USE - For cracking hydrocarbon material selected from methanol, ethanol, ethane, propane, biodiesel, carbon monoxide, and nitrogen (claimed).    ADVANTAGE - The method cracks small quantities of low carbon number hydrocarbons, such as methane, ethane, propane, and butane, or diluted organic compounds such as alcohols and mercaptans; and cracks the material that eliminates the logistical and economical problems often associated with relying on water as a cracking material, increases the amount of energy provided through the nozzle reactor per kg of cracking fluid as compared to when steam is used as the cracking material, improves cracking of hydrocarbon material, greatly reduces the energy required for cooling, and leads to an increase in hydrogen transfer.    DETAILED DESCRIPTION - Cracking hydrocarbon material in a nozzle reactor involves providing a nozzle reactor containing a reactor body having a reactor body passage with an injection end and an ejection end; a first material injector having a first material injection passage and being mounted in the nozzle reactor in material injecting communication with the injection end of the reactor body, where the first material injection passage having (a) an enlarged volume injection section, an enlarged volume ejection section, and a reduced volume mid-section intermediate the enlarged volume injection section and enlarged volume ejection section, (b) a material injection end, and (c) a material ejection end in injecting communication with the reactor body passage; and a second material feed port penetrating the reactor body and being adjacent to the material ejection end of the first material injection passage; injecting a stream of cracking material through the first material injector into the reactor body; and injecting hydrocarbon material through the second material feed port into the reactor body; where the cracking material is methanol, ethanol, ethane, propane, biodiesel, carbon monoxide, and/or nitrogen.